diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 000000000..6c332550c
Binary files /dev/null and b/.DS_Store differ
diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
index 738822d9b..56f74e254 100644
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@@ -1 +1,2 @@
 github: ryanheise
+custom: [https://www.klaep.com/]
diff --git a/.gitignore b/.gitignore
index 69bfd0eec..92030a2c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,12 @@ build/
 .flutter-plugins
 coverage
 pubspec.lock
+
+# IntelliJ
+.idea
+*.iml
+
+# VS Code
+.vscode
+
+.DS_Store
\ No newline at end of file
diff --git a/just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java b/just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java
index d31c284d2..2a620a39f 100644
--- a/just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java
+++ b/just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java
@@ -765,29 +765,39 @@ private void loudnessEnhancerSetTargetGain(double targetGain) {
         ((LoudnessEnhancer)audioEffectsMap.get("AndroidLoudnessEnhancer")).setTargetGain(targetGainMillibels);
     }
 
+    // dB = 0.1 bels | 0.8 = Equalize the level between ios and android
+    private short dbToMillibels(double value) {
+        return  (short)(Math.round(value * 100.0 * 0.8));
+    }
+
+    // dB = 0.1 bels | 0.8 = Equalize the level between ios and android
+    private double millibelsToDb(int value) {
+        return  (double)(Math.round(value / 100.0 / 0.8));
+    }
+
     private Map<String, Object> equalizerAudioEffectGetParameters() {
         Equalizer equalizer = (Equalizer)audioEffectsMap.get("AndroidEqualizer");
         ArrayList<Object> rawBands = new ArrayList<>();
         for (short i = 0; i < equalizer.getNumberOfBands(); i++) {
             rawBands.add(mapOf(
                 "index", i,
-                "lowerFrequency", (double)equalizer.getBandFreqRange(i)[0] / 1000.0,
-                "upperFrequency", (double)equalizer.getBandFreqRange(i)[1] / 1000.0,
-                "centerFrequency", (double)equalizer.getCenterFreq(i) / 1000.0,
-                "gain", equalizer.getBandLevel(i) / 1000.0
+                "lowerFrequency", millibelsToDb(equalizer.getBandFreqRange(i)[0]),
+                "upperFrequency", millibelsToDb(equalizer.getBandFreqRange(i)[1]),
+                "centerFrequency", millibelsToDb(equalizer.getCenterFreq(i)),
+                "gain", millibelsToDb(equalizer.getBandLevel(i))
             ));
         }
         return mapOf(
             "parameters", mapOf(
-                "minDecibels", equalizer.getBandLevelRange()[0] / 1000.0,
-                "maxDecibels", equalizer.getBandLevelRange()[1] / 1000.0,
+                "minDecibels", millibelsToDb(equalizer.getBandLevelRange()[0]),
+                "maxDecibels", millibelsToDb(equalizer.getBandLevelRange()[1]),
                 "bands", rawBands
             )
         );
     }
 
     private void equalizerBandSetGain(int bandIndex, double gain) {
-        ((Equalizer)audioEffectsMap.get("AndroidEqualizer")).setBandLevel((short)bandIndex, (short)(Math.round(gain * 1000.0)));
+        ((Equalizer)audioEffectsMap.get("AndroidEqualizer")).setBandLevel((short)bandIndex, dbToMillibels(gain));
     }
 
     /// Creates an event based on the current state.
diff --git a/just_audio/darwin/Classes/AudioPlayer.m b/just_audio/darwin/Classes/AudioPlayer.m
deleted file mode 100644
index ad611ccaf..000000000
--- a/just_audio/darwin/Classes/AudioPlayer.m
+++ /dev/null
@@ -1,1331 +0,0 @@
-#import "BetterEventChannel.h"
-#import "AudioPlayer.h"
-#import "AudioSource.h"
-#import "IndexedAudioSource.h"
-#import "LoadControl.h"
-#import "UriAudioSource.h"
-#import "ConcatenatingAudioSource.h"
-#import "LoopingAudioSource.h"
-#import "ClippingAudioSource.h"
-#import <AVFoundation/AVFoundation.h>
-#import <stdlib.h>
-#include <TargetConditionals.h>
-
-// TODO: Check for and report invalid state transitions.
-// TODO: Apply Apple's guidance on seeking: https://developer.apple.com/library/archive/qa/qa1820/_index.html
-@implementation AudioPlayer {
-    NSObject<FlutterPluginRegistrar>* _registrar;
-    FlutterMethodChannel *_methodChannel;
-    BetterEventChannel *_eventChannel;
-    BetterEventChannel *_dataEventChannel;
-    NSString *_playerId;
-    AVQueuePlayer *_player;
-    AudioSource *_audioSource;
-    NSMutableArray<IndexedAudioSource *> *_indexedAudioSources;
-    NSArray<NSNumber *> *_order;
-    NSMutableArray<NSNumber *> *_orderInv;
-    int _index;
-    enum ProcessingState _processingState;
-    enum LoopMode _loopMode;
-    BOOL _shuffleModeEnabled;
-    long long _updateTime;
-    int _updatePosition;
-    int _lastPosition;
-    int _bufferedPosition;
-    // Set when the current item hasn't been played yet so we aren't sure whether sufficient audio has been buffered.
-    BOOL _bufferUnconfirmed;
-    CMTime _seekPos;
-    FlutterResult _loadResult;
-    FlutterResult _playResult;
-    id _timeObserver;
-    BOOL _automaticallyWaitsToMinimizeStalling;
-    LoadControl *_loadControl;
-    BOOL _playing;
-    float _speed;
-    float _volume;
-    BOOL _justAdvanced;
-    NSDictionary<NSString *, NSObject *> *_icyMetadata;
-}
-
-- (instancetype)initWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar playerId:(NSString*)idParam loadConfiguration:(NSDictionary *)loadConfiguration {
-    self = [super init];
-    NSAssert(self, @"super init cannot be nil");
-    _registrar = registrar;
-    _playerId = idParam;
-    _methodChannel =
-        [FlutterMethodChannel methodChannelWithName:[NSMutableString stringWithFormat:@"com.ryanheise.just_audio.methods.%@", _playerId]
-                                    binaryMessenger:[registrar messenger]];
-    _eventChannel = [[BetterEventChannel alloc]
-        initWithName:[NSMutableString stringWithFormat:@"com.ryanheise.just_audio.events.%@", _playerId]
-           messenger:[registrar messenger]];
-    _dataEventChannel = [[BetterEventChannel alloc]
-        initWithName:[NSMutableString stringWithFormat:@"com.ryanheise.just_audio.data.%@", _playerId]
-           messenger:[registrar messenger]];
-    _index = 0;
-    _processingState = none;
-    _loopMode = loopOff;
-    _shuffleModeEnabled = NO;
-    _player = nil;
-    _audioSource = nil;
-    _indexedAudioSources = nil;
-    _order = nil;
-    _orderInv = nil;
-    _seekPos = kCMTimeInvalid;
-    _timeObserver = 0;
-    _updatePosition = 0;
-    _updateTime = 0;
-    _lastPosition = 0;
-    _bufferedPosition = 0;
-    _bufferUnconfirmed = NO;
-    _playing = NO;
-    _loadResult = nil;
-    _playResult = nil;
-    _automaticallyWaitsToMinimizeStalling = YES;
-    _loadControl = nil;
-    if (loadConfiguration != (id)[NSNull null]) {
-        NSDictionary *map = loadConfiguration[@"darwinLoadControl"];
-        if (map != (id)[NSNull null]) {
-            _loadControl = [[LoadControl alloc] init];
-            _loadControl.preferredForwardBufferDuration = (NSNumber *)map[@"preferredForwardBufferDuration"];
-            _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused = (BOOL)[map[@"canUseNetworkResourcesForLiveStreamingWhilePaused"] boolValue];
-            _loadControl.preferredPeakBitRate = (NSNumber *)map[@"preferredPeakBitRate"];
-            _automaticallyWaitsToMinimizeStalling = (BOOL)[map[@"automaticallyWaitsToMinimizeStalling"] boolValue];
-        }
-    }
-    if (!_loadControl) {
-        _loadControl = [[LoadControl alloc] init];
-        _loadControl.preferredForwardBufferDuration = (NSNumber *)[NSNull null];
-        _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused = NO;
-        _loadControl.preferredPeakBitRate = (NSNumber *)[NSNull null];
-    }
-    _speed = 1.0f;
-    _volume = 1.0f;
-    _justAdvanced = NO;
-    _icyMetadata = @{};
-    __weak __typeof__(self) weakSelf = self;
-    [_methodChannel setMethodCallHandler:^(FlutterMethodCall* call, FlutterResult result) {
-        [weakSelf handleMethodCall:call result:result];
-    }];
-    return self;
-}
-
-- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
-    @try {
-        NSDictionary *request = (NSDictionary *)call.arguments;
-        if ([@"load" isEqualToString:call.method]) {
-            CMTime initialPosition = request[@"initialPosition"] == (id)[NSNull null] ? kCMTimeInvalid : CMTimeMake([request[@"initialPosition"] longLongValue], 1000000);
-            [self load:request[@"audioSource"] initialPosition:initialPosition initialIndex:request[@"initialIndex"] result:result];
-        } else if ([@"play" isEqualToString:call.method]) {
-            [self play:result];
-        } else if ([@"pause" isEqualToString:call.method]) {
-            [self pause];
-            result(@{});
-        } else if ([@"setVolume" isEqualToString:call.method]) {
-            [self setVolume:(float)[request[@"volume"] doubleValue]];
-            result(@{});
-        } else if ([@"setSkipSilence" isEqualToString:call.method]) {
-            /// TODO on iOS side; Seems more involved, so someone with ObjectiveC experience might look at it.
-            result(@{});
-        } else if ([@"setSpeed" isEqualToString:call.method]) {
-            [self setSpeed:(float)[request[@"speed"] doubleValue]];
-            result(@{});
-        } else if ([@"setLoopMode" isEqualToString:call.method]) {
-            [self setLoopMode:[request[@"loopMode"] intValue]];
-            result(@{});
-        } else if ([@"setShuffleMode" isEqualToString:call.method]) {
-            [self setShuffleModeEnabled:(BOOL)([request[@"shuffleMode"] intValue] == 1)];
-            result(@{});
-        } else if ([@"setShuffleOrder" isEqualToString:call.method]) {
-            [self setShuffleOrder:(NSDictionary *)request[@"audioSource"]];
-            result(@{});
-        } else if ([@"setAutomaticallyWaitsToMinimizeStalling" isEqualToString:call.method]) {
-            [self setAutomaticallyWaitsToMinimizeStalling:(BOOL)[request[@"enabled"] boolValue]];
-            result(@{});
-        } else if ([@"setCanUseNetworkResourcesForLiveStreamingWhilePaused" isEqualToString:call.method]) {
-            [self setCanUseNetworkResourcesForLiveStreamingWhilePaused:(BOOL)[request[@"enabled"] boolValue]];
-            result(@{});
-        } else if ([@"setPreferredPeakBitRate" isEqualToString:call.method]) {
-            [self setPreferredPeakBitRate:(NSNumber *)request[@"bitRate"]];
-            result(@{});
-        } else if ([@"seek" isEqualToString:call.method]) {
-            CMTime position = request[@"position"] == (id)[NSNull null] ? kCMTimePositiveInfinity : CMTimeMake([request[@"position"] longLongValue], 1000000);
-            [self seek:position index:request[@"index"] completionHandler:^(BOOL finished) {
-                result(@{});
-            }];
-        } else if ([@"concatenatingInsertAll" isEqualToString:call.method]) {
-            [self concatenatingInsertAll:(NSString *)request[@"id"] index:[request[@"index"] intValue] sources:(NSArray *)request[@"children"] shuffleOrder:(NSArray<NSNumber *> *)request[@"shuffleOrder"]];
-            result(@{});
-        } else if ([@"concatenatingRemoveRange" isEqualToString:call.method]) {
-            [self concatenatingRemoveRange:(NSString *)request[@"id"] start:[request[@"startIndex"] intValue] end:[request[@"endIndex"] intValue] shuffleOrder:(NSArray<NSNumber *> *)request[@"shuffleOrder"]];
-            result(@{});
-        } else if ([@"concatenatingMove" isEqualToString:call.method]) {
-            [self concatenatingMove:(NSString *)request[@"id"] currentIndex:[request[@"currentIndex"] intValue] newIndex:[request[@"newIndex"] intValue] shuffleOrder:(NSArray<NSNumber *> *)request[@"shuffleOrder"]];
-            result(@{});
-        } else if ([@"setAndroidAudioAttributes" isEqualToString:call.method]) {
-            result(@{});
-        } else {
-            result(FlutterMethodNotImplemented);
-        }
-    } @catch (id exception) {
-        //NSLog(@"Error in handleMethodCall");
-        FlutterError *flutterError = [FlutterError errorWithCode:@"error" message:@"Error in handleMethodCall" details:nil];
-        result(flutterError);
-    }
-}
-
-- (AVQueuePlayer *)player {
-    return _player;
-}
-
-- (float)speed {
-    return _speed;
-}
-
-// Untested
-- (void)concatenatingInsertAll:(NSString *)catId index:(int)index sources:(NSArray *)sources shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder {
-    // Find all duplicates of the identified ConcatenatingAudioSource.
-    NSMutableArray *matches = [[NSMutableArray alloc] init];
-    [_audioSource findById:catId matches:matches];
-    // Add each new source to each match.
-    for (int i = 0; i < matches.count; i++) {
-        ConcatenatingAudioSource *catSource = (ConcatenatingAudioSource *)matches[i];
-        int idx = index >= 0 ? index : catSource.count;
-        NSMutableArray<AudioSource *> *audioSources = [self decodeAudioSources:sources];
-        for (int j = 0; j < audioSources.count; j++) {
-            AudioSource *audioSource = audioSources[j];
-            [catSource insertSource:audioSource atIndex:(idx + j)];
-        }
-        [catSource setShuffleOrder:shuffleOrder];
-    }
-    // Index the new audio sources.
-    _indexedAudioSources = [[NSMutableArray alloc] init];
-    [_audioSource buildSequence:_indexedAudioSources treeIndex:0];
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        IndexedAudioSource *audioSource = _indexedAudioSources[i];
-        if (!audioSource.isAttached) {
-            audioSource.playerItem.audioSource = audioSource;
-            [self addItemObservers:audioSource.playerItem];
-        }
-    }
-    [self updateOrder];
-    if (_player.currentItem) {
-        _index = [self indexForItem:(IndexedPlayerItem *)_player.currentItem];
-    } else {
-        _index = 0;
-    }
-    [self enqueueFrom:_index];
-    // Notify each new IndexedAudioSource that it's been attached to the player.
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        if (!_indexedAudioSources[i].isAttached) {
-            [_indexedAudioSources[i] attach:_player initialPos:kCMTimeInvalid];
-        }
-    }
-    [self broadcastPlaybackEvent];
-}
-
-// Untested
-- (void)concatenatingRemoveRange:(NSString *)catId start:(int)start end:(int)end shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder {
-    // Find all duplicates of the identified ConcatenatingAudioSource.
-    NSMutableArray *matches = [[NSMutableArray alloc] init];
-    [_audioSource findById:catId matches:matches];
-    // Remove range from each match.
-    for (int i = 0; i < matches.count; i++) {
-        ConcatenatingAudioSource *catSource = (ConcatenatingAudioSource *)matches[i];
-        int endIndex = end >= 0 ? end : catSource.count;
-        [catSource removeSourcesFromIndex:start toIndex:endIndex];
-        [catSource setShuffleOrder:shuffleOrder];
-    }
-    // Re-index the remaining audio sources.
-    NSArray<IndexedAudioSource *> *oldIndexedAudioSources = _indexedAudioSources;
-    _indexedAudioSources = [[NSMutableArray alloc] init];
-    [_audioSource buildSequence:_indexedAudioSources treeIndex:0];
-    for (int i = 0, j = 0; i < _indexedAudioSources.count; i++, j++) {
-        IndexedAudioSource *audioSource = _indexedAudioSources[i];
-        while (audioSource != oldIndexedAudioSources[j]) {
-            [self removeItemObservers:oldIndexedAudioSources[j].playerItem];
-            if (oldIndexedAudioSources[j].playerItem2) {
-                [self removeItemObservers:oldIndexedAudioSources[j].playerItem2];
-            }
-            if (j < _index) {
-                _index--;
-            } else if (j == _index) {
-                // The currently playing item was removed.
-            }
-            j++;
-        }
-    }
-    [self updateOrder];
-    if (_index >= _indexedAudioSources.count) _index = (int)_indexedAudioSources.count - 1;
-    if (_index < 0) _index = 0;
-    [self enqueueFrom:_index];
-    [self broadcastPlaybackEvent];
-}
-
-// Untested
-- (void)concatenatingMove:(NSString *)catId currentIndex:(int)currentIndex newIndex:(int)newIndex shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder {
-    // Find all duplicates of the identified ConcatenatingAudioSource.
-    NSMutableArray *matches = [[NSMutableArray alloc] init];
-    [_audioSource findById:catId matches:matches];
-    // Move range within each match.
-    for (int i = 0; i < matches.count; i++) {
-        ConcatenatingAudioSource *catSource = (ConcatenatingAudioSource *)matches[i];
-        [catSource moveSourceFromIndex:currentIndex toIndex:newIndex];
-        [catSource setShuffleOrder:shuffleOrder];
-    }
-    // Re-index the audio sources.
-    _indexedAudioSources = [[NSMutableArray alloc] init];
-    [_audioSource buildSequence:_indexedAudioSources treeIndex:0];
-    [self updateOrder];
-    [self enqueueFrom:[self indexForItem:(IndexedPlayerItem *)_player.currentItem]];
-    [self broadcastPlaybackEvent];
-}
-
-- (void)checkForDiscontinuity {
-    if (!_playing || CMTIME_IS_VALID(_seekPos) || _processingState == completed) return;
-    int position = [self getCurrentPosition];
-    if (_processingState == buffering) {
-        if (position > _lastPosition) {
-            [self leaveBuffering:@"stall ended"];
-            [self updatePosition];
-            [self broadcastPlaybackEvent];
-        }
-    } else {
-        long long now = (long long)([[NSDate date] timeIntervalSince1970] * 1000.0);
-        long long timeSinceLastUpdate = now - _updateTime;
-        long long expectedPosition = _updatePosition + (long long)(timeSinceLastUpdate * _player.rate);
-        long long drift = position - expectedPosition;
-        //NSLog(@"position: %d, drift: %lld", position, drift);
-        // Update if we've drifted or just started observing
-        if (_updateTime == 0L) {
-            [self broadcastPlaybackEvent];
-        } else if (drift < -100) {
-            [self enterBuffering:@"stalling"];
-            //NSLog(@"Drift: %lld", drift);
-            [self updatePosition];
-            [self broadcastPlaybackEvent];
-        }
-    }
-    _lastPosition = position;
-}
-
-- (void)enterBuffering:(NSString *)reason {
-    //NSLog(@"ENTER BUFFERING: %@", reason);
-    _processingState = buffering;
-}
-
-- (void)leaveBuffering:(NSString *)reason {
-    //NSLog(@"LEAVE BUFFERING: %@", reason);
-    _processingState = ready;
-}
-
-- (void)broadcastPlaybackEvent {
-    [_eventChannel sendEvent:@{
-            @"processingState": @(_processingState),
-            @"updatePosition": @((long long)1000 * _updatePosition),
-            @"updateTime": @(_updateTime),
-            @"bufferedPosition": @((long long)1000 * [self getBufferedPosition]),
-            @"icyMetadata": _icyMetadata,
-            @"duration": @([self getDurationMicroseconds]),
-            @"currentIndex": @(_index),
-    }];
-}
-
-- (int)getCurrentPosition {
-    // XXX: During load, the second case will be selected returning 0.
-    // TODO: Provide a similar case as _seekPos for _initialPos.
-    if (CMTIME_IS_VALID(_seekPos)) {
-        return (int)(1000 * CMTimeGetSeconds(_seekPos));
-    } else if (_indexedAudioSources && _indexedAudioSources.count > 0) {
-        int ms = (int)(1000 * CMTimeGetSeconds(_indexedAudioSources[_index].position));
-        if (ms < 0) ms = 0;
-        return ms;
-    } else {
-        return 0;
-    }
-}
-
-- (int)getBufferedPosition {
-    if (_processingState == none || _processingState == loading) {
-        return 0;
-    } else if (_indexedAudioSources && _indexedAudioSources.count > 0) {
-        int ms = (int)(1000 * CMTimeGetSeconds(_indexedAudioSources[_index].bufferedPosition));
-        if (ms < 0) ms = 0;
-        return ms;
-    } else {
-        return 0;
-    }
-}
-
-- (int)getDuration {
-    if (_processingState == none || _processingState == loading) {
-        return -1;
-    } else if (_indexedAudioSources && _indexedAudioSources.count > 0) {
-        int v = (int)(1000 * CMTimeGetSeconds(_indexedAudioSources[_index].duration));
-        return v;
-    } else {
-        return 0;
-    }
-}
-
-- (long long)getDurationMicroseconds {
-    int duration = [self getDuration];
-    return duration < 0 ? -1 : ((long long)1000 * duration);
-}
-
-- (void)removeItemObservers:(AVPlayerItem *)playerItem {
-    [playerItem removeObserver:self forKeyPath:@"status"];
-    [playerItem removeObserver:self forKeyPath:@"playbackBufferEmpty"];
-    [playerItem removeObserver:self forKeyPath:@"playbackBufferFull"];
-    [playerItem removeObserver:self forKeyPath:@"loadedTimeRanges"];
-    //[playerItem removeObserver:self forKeyPath:@"playbackLikelyToKeepUp"];
-    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];
-    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemFailedToPlayToEndTimeNotification object:playerItem];
-    [[NSNotificationCenter defaultCenter] removeObserver:self name:AVPlayerItemPlaybackStalledNotification object:playerItem];
-}
-
-- (void)addItemObservers:(AVPlayerItem *)playerItem {
-    // Get notified when the item is loaded or had an error loading
-    [playerItem addObserver:self forKeyPath:@"status" options:NSKeyValueObservingOptionNew context:nil];
-    // Get notified of the buffer state
-    [playerItem addObserver:self forKeyPath:@"playbackBufferEmpty" options:NSKeyValueObservingOptionNew context:nil];
-    [playerItem addObserver:self forKeyPath:@"playbackBufferFull" options:NSKeyValueObservingOptionNew context:nil];
-    [playerItem addObserver:self forKeyPath:@"loadedTimeRanges" options:NSKeyValueObservingOptionNew context:nil];
-    //[playerItem addObserver:self forKeyPath:@"playbackLikelyToKeepUp" options:NSKeyValueObservingOptionNew context:nil];
-    // Get notified when playback has reached the end
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onComplete:) name:AVPlayerItemDidPlayToEndTimeNotification object:playerItem];
-    // Get notified when playback stops due to a failure (currently unused)
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onFailToComplete:) name:AVPlayerItemFailedToPlayToEndTimeNotification object:playerItem];
-    // Get notified when playback stalls (currently unused)
-    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onItemStalled:) name:AVPlayerItemPlaybackStalledNotification object:playerItem];
-
-    AVPlayerItemMetadataOutput *metadataOutput = [[AVPlayerItemMetadataOutput alloc] initWithIdentifiers:nil];
-    [metadataOutput setDelegate:self queue:dispatch_get_main_queue()];
-    // Since the delegate is stored as a weak reference,
-    // there shouldn't be a retain cycle.
-    // TODO: Check this. Shouldn't need to removeOutput
-    // later?
-    [playerItem addOutput:metadataOutput];
-}
-
-- (void)metadataOutput:(AVPlayerItemMetadataOutput *)output didOutputTimedMetadataGroups:(NSArray<AVTimedMetadataGroup *> *)groups fromPlayerItemTrack:(AVPlayerItemTrack *)track {
-    // ICY headers aren't available here. Maybe do this in the proxy.
-    BOOL hasIcyData = NO;
-    NSString *title = (NSString *)[NSNull null];
-    NSString *url = (NSString *)[NSNull null];
-    for (int i = 0; i < groups.count; i++) {
-        AVTimedMetadataGroup *group = groups[i];
-        for (int j = 0; j < group.items.count; j++) {
-            AVMetadataItem *item = group.items[j];
-            if ([@"icy/StreamTitle" isEqualToString:item.identifier]) {
-                hasIcyData = YES;
-                title = (NSString *)item.value;
-            } else if ([@"icy/StreamUrl" isEqualToString:item.identifier]) {
-                hasIcyData = YES;
-                url = (NSString *)item.value;
-            }
-        }
-    }
-    if (hasIcyData) {
-        _icyMetadata = @{
-            @"info": @{
-                @"title": title,
-                @"url": url,
-            },
-        };
-        [self broadcastPlaybackEvent];
-    }
-}
-
-- (NSMutableArray<AudioSource *> *)decodeAudioSources:(NSArray *)data {
-    NSMutableArray<AudioSource *> *array = (NSMutableArray<AudioSource *> *)[[NSMutableArray alloc] init];
-    for (int i = 0; i < [data count]; i++) {
-        AudioSource *source = [self decodeAudioSource:data[i]];
-        [array addObject:source];
-    }
-    return array;
-}
-
-- (AudioSource *)decodeAudioSource:(NSDictionary *)data {
-    NSString *type = data[@"type"];
-    if ([@"progressive" isEqualToString:type]) {
-        return [[UriAudioSource alloc] initWithId:data[@"id"] uri:data[@"uri"] loadControl:_loadControl];
-    } else if ([@"dash" isEqualToString:type]) {
-        return [[UriAudioSource alloc] initWithId:data[@"id"] uri:data[@"uri"] loadControl:_loadControl];
-    } else if ([@"hls" isEqualToString:type]) {
-        return [[UriAudioSource alloc] initWithId:data[@"id"] uri:data[@"uri"] loadControl:_loadControl];
-    } else if ([@"concatenating" isEqualToString:type]) {
-        return [[ConcatenatingAudioSource alloc] initWithId:data[@"id"]
-                                               audioSources:[self decodeAudioSources:data[@"children"]]
-                                               shuffleOrder:(NSArray<NSNumber *> *)data[@"shuffleOrder"]];
-    } else if ([@"clipping" isEqualToString:type]) {
-        return [[ClippingAudioSource alloc] initWithId:data[@"id"]
-                                           audioSource:(UriAudioSource *)[self decodeAudioSource:data[@"child"]]
-                                                 start:data[@"start"]
-                                                   end:data[@"end"]];
-    } else if ([@"looping" isEqualToString:type]) {
-        NSMutableArray *childSources = [NSMutableArray new];
-        int count = [data[@"count"] intValue];
-        for (int i = 0; i < count; i++) {
-            [childSources addObject:[self decodeAudioSource:data[@"child"]]];
-        }
-        return [[LoopingAudioSource alloc] initWithId:data[@"id"] audioSources:childSources];
-    } else {
-        return nil;
-    }
-}
-
-- (void)enqueueFrom:(int)index {
-    //NSLog(@"### enqueueFrom:%d", index);
-    _index = index;
-
-    // Update the queue while keeping the currently playing item untouched.
-
-    /* NSLog(@"before reorder: _player.items.count: ", _player.items.count); */
-    /* [self dumpQueue]; */
-
-    // First, remove all _player items except for the currently playing one (if any).
-    IndexedPlayerItem *oldItem = (IndexedPlayerItem *)_player.currentItem;
-    IndexedPlayerItem *existingItem = nil;
-    IndexedPlayerItem *newItem = _indexedAudioSources.count > 0 ? _indexedAudioSources[_index].playerItem : nil;
-    NSArray *oldPlayerItems = [NSArray arrayWithArray:_player.items];
-    // In the first pass, preserve the old and new items.
-    for (int i = 0; i < oldPlayerItems.count; i++) {
-        if (oldPlayerItems[i] == newItem) {
-            // Preserve and tag new item if it is already in the queue.
-            existingItem = oldPlayerItems[i];
-            //NSLog(@"Preserving existing item %d", [self indexForItem:existingItem]);
-        } else if (oldPlayerItems[i] == oldItem) {
-            //NSLog(@"Preserving old item %d", [self indexForItem:oldItem]);
-            // Temporarily preserve old item, just to avoid jumping to
-            // intermediate queue positions unnecessarily. We only want to jump
-            // once to _index.
-        } else {
-            //NSLog(@"Removing item %d", [self indexForItem:oldPlayerItems[i]]);
-            [_player removeItem:oldPlayerItems[i]];
-        }
-    }
-    // In the second pass, remove the old item (if different from new item).
-    if (oldItem && newItem != oldItem) {
-        //NSLog(@"removing old item %d", [self indexForItem:oldItem]);
-        [_player removeItem:oldItem];
-    }
-
-    /* NSLog(@"inter order: _player.items.count: ", _player.items.count); */
-    /* [self dumpQueue]; */
-
-    // Regenerate queue
-    if (!existingItem || _loopMode != loopOne) {
-        BOOL include = NO;
-        for (int i = 0; i < [_order count]; i++) {
-            int si = [_order[i] intValue];
-            if (si == _index) include = YES;
-            if (include && _indexedAudioSources[si].playerItem != existingItem) {
-                //NSLog(@"inserting item %d", si);
-                [_player insertItem:_indexedAudioSources[si].playerItem afterItem:nil];
-                if (_loopMode == loopOne) {
-                    // We only want one item in the queue.
-                    break;
-                }
-            }
-        }
-    }
-
-    // Add next loop item if we're looping
-    if (_order.count > 0) {
-        if (_loopMode == loopAll) {
-            int si = [_order[0] intValue];
-            //NSLog(@"### add loop item:%d", si);
-            if (!_indexedAudioSources[si].playerItem2) {
-                [_indexedAudioSources[si] preparePlayerItem2];
-                [self addItemObservers:_indexedAudioSources[si].playerItem2];
-            }
-            [_player insertItem:_indexedAudioSources[si].playerItem2 afterItem:nil];
-        } else if (_loopMode == loopOne) {
-            //NSLog(@"### add loop item:%d", _index);
-            if (!_indexedAudioSources[_index].playerItem2) {
-                [_indexedAudioSources[_index] preparePlayerItem2];
-                [self addItemObservers:_indexedAudioSources[_index].playerItem2];
-            }
-            [_player insertItem:_indexedAudioSources[_index].playerItem2 afterItem:nil];
-        }
-    }
-
-    /* NSLog(@"after reorder: _player.items.count: ", _player.items.count); */
-    /* [self dumpQueue]; */
-
-    if (_processingState != loading && oldItem != newItem) {
-        // || !_player.currentItem.playbackLikelyToKeepUp;
-        if (_player.currentItem.playbackBufferEmpty) {
-            [self enterBuffering:@"enqueueFrom playbackBufferEmpty"];
-        } else {
-            [self leaveBuffering:@"enqueueFrom !playbackBufferEmpty"];
-        }
-        [self updatePosition];
-    }
-
-    [self updateEndAction];
-}
-
-- (void)updatePosition {
-    _updatePosition = [self getCurrentPosition];
-    _updateTime = (long long)([[NSDate date] timeIntervalSince1970] * 1000.0);
-}
-
-- (void)load:(NSDictionary *)source initialPosition:(CMTime)initialPosition initialIndex:(NSNumber *)initialIndex result:(FlutterResult)result {
-    if (_playing) {
-        [_player pause];
-    }
-    if (_processingState == loading) {
-        [self abortExistingConnection];
-    }
-    _loadResult = result;
-    _processingState = loading;
-    _index = (initialIndex != (id)[NSNull null]) ? [initialIndex intValue] : 0;
-    // Remove previous observers
-    if (_indexedAudioSources) {
-        for (int i = 0; i < [_indexedAudioSources count]; i++) {
-            [self removeItemObservers:_indexedAudioSources[i].playerItem];
-            if (_indexedAudioSources[i].playerItem2) {
-                [self removeItemObservers:_indexedAudioSources[i].playerItem2];
-            }
-        }
-    }
-    // Decode audio source
-    if (_audioSource && [@"clipping" isEqualToString:source[@"type"]]) {
-        // Check if we're clipping an audio source that was previously loaded.
-        UriAudioSource *child = nil;
-        if ([_audioSource isKindOfClass:[ClippingAudioSource class]]) {
-            ClippingAudioSource *clipper = (ClippingAudioSource *)_audioSource;
-            child = clipper.audioSource;
-        } else if ([_audioSource isKindOfClass:[UriAudioSource class]]) {
-            child = (UriAudioSource *)_audioSource;
-        }
-        NSString *type = source[@"child"][@"type"];
-        NSString *uri = nil;
-        if ([@"progressive" isEqualToString:type] || [@"dash" isEqualToString:type] || [@"hls" isEqualToString:type]) {
-            uri = source[@"child"][@"uri"];
-        }
-        if (child && uri && [child.uri isEqualToString:uri]) {
-            ClippingAudioSource *clipper =
-                [[ClippingAudioSource alloc] initWithId:source[@"id"]
-                                            audioSource:child
-                                                  start:source[@"start"]
-                                                    end:source[@"end"]];
-            clipper.playerItem.audioSource = clipper;
-            if (clipper.playerItem2) {
-                clipper.playerItem2.audioSource = clipper;
-            }
-            _audioSource = clipper;
-        } else {
-            _audioSource = [self decodeAudioSource:source];
-        }
-    } else {
-        _audioSource = [self decodeAudioSource:source];
-    }
-    _indexedAudioSources = [[NSMutableArray alloc] init];
-    [_audioSource buildSequence:_indexedAudioSources treeIndex:0];
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        IndexedAudioSource *source = _indexedAudioSources[i];
-        [self addItemObservers:source.playerItem];
-        source.playerItem.audioSource = source;
-    }
-    [self updatePosition];
-    [self updateOrder];
-    // Set up an empty player
-    if (!_player) {
-        _player = [[AVQueuePlayer alloc] initWithItems:@[]];
-        if (@available(macOS 10.12, iOS 10.0, *)) {
-            _player.automaticallyWaitsToMinimizeStalling = _automaticallyWaitsToMinimizeStalling;
-            // TODO: Remove these observers in dispose.
-            [_player addObserver:self
-                      forKeyPath:@"timeControlStatus"
-                         options:NSKeyValueObservingOptionNew
-                         context:nil];
-        }
-        [_player addObserver:self
-                  forKeyPath:@"currentItem"
-                     options:NSKeyValueObservingOptionNew
-                     context:nil];
-        // TODO: learn about the different ways to define weakSelf.
-        //__weak __typeof__(self) weakSelf = self;
-        //typeof(self) __weak weakSelf = self;
-        __unsafe_unretained typeof(self) weakSelf = self;
-        if (@available(macOS 10.12, iOS 10.0, *)) {}
-        else {
-            _timeObserver = [_player addPeriodicTimeObserverForInterval:CMTimeMake(200, 1000)
-                                                                  queue:nil
-                                                             usingBlock:^(CMTime time) {
-                                                                 [weakSelf checkForDiscontinuity];
-                                                             }
-            ];
-        }
-    }
-    // Initialise the AVQueuePlayer with items.
-    [self enqueueFrom:_index];
-    // Notify each IndexedAudioSource that it's been attached to the player.
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        [_indexedAudioSources[i] attach:_player initialPos:(i == _index ? initialPosition : kCMTimeInvalid)];
-    }
-
-    if (_indexedAudioSources.count == 0 || !_player.currentItem ||
-            _player.currentItem.status == AVPlayerItemStatusReadyToPlay) {
-        _processingState = ready;
-        _loadResult(@{@"duration": @([self getDurationMicroseconds])});
-        _loadResult = nil;
-    } else {
-        // We send result after the playerItem is ready in observeValueForKeyPath.
-    }
-    if (_playing) {
-        _player.rate = _speed;
-    }
-    [_player setVolume:_volume];
-    [self broadcastPlaybackEvent];
-    /* NSLog(@"load:"); */
-    /* for (int i = 0; i < [_indexedAudioSources count]; i++) { */
-    /*     NSLog(@"- %@", _indexedAudioSources[i].sourceId); */
-    /* } */
-}
-
-- (void)updateOrder {
-    _orderInv = [NSMutableArray arrayWithCapacity:[_indexedAudioSources count]];
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        [_orderInv addObject:@(0)];
-    }
-    if (_shuffleModeEnabled) {
-        _order = [_audioSource getShuffleIndices];
-    } else {
-        NSMutableArray *order = [[NSMutableArray alloc] init];
-        for (int i = 0; i < [_indexedAudioSources count]; i++) {
-            [order addObject:@(i)];
-        }
-        _order = order;
-    }
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        _orderInv[[_order[i] intValue]] = @(i);
-    }
-}
-
-- (void)onItemStalled:(NSNotification *)notification {
-    //IndexedPlayerItem *playerItem = (IndexedPlayerItem *)notification.object;
-    //NSLog(@"onItemStalled");
-}
-
-- (void)onFailToComplete:(NSNotification *)notification {
-    //IndexedPlayerItem *playerItem = (IndexedPlayerItem *)notification.object;
-    //NSLog(@"onFailToComplete");
-}
-
-- (void)onComplete:(NSNotification *)notification {
-    //NSLog(@"onComplete");
-
-    IndexedPlayerItem *endedPlayerItem = (IndexedPlayerItem *)notification.object;
-    IndexedAudioSource *endedSource = endedPlayerItem.audioSource;
-
-    if (_loopMode == loopOne) {
-        [endedSource seek:kCMTimeZero];
-        _justAdvanced = YES;
-    } else if (_loopMode == loopAll) {
-        [endedSource seek:kCMTimeZero];
-        _index = [_order[([_orderInv[_index] intValue] + 1) % _order.count] intValue];
-        [self broadcastPlaybackEvent];
-        _justAdvanced = YES;
-    } else if ([_orderInv[_index] intValue] + 1 < [_order count]) {
-        [endedSource seek:kCMTimeZero];
-        _index = [_order[([_orderInv[_index] intValue] + 1)] intValue];
-        [self updateEndAction];
-        [self broadcastPlaybackEvent];
-        _justAdvanced = YES;
-    } else {
-        // reached end of playlist
-        [self complete];
-    }
-}
-
-- (void)observeValueForKeyPath:(NSString *)keyPath
-                      ofObject:(id)object
-                        change:(NSDictionary<NSString *,id> *)change
-                       context:(void *)context {
-
-    if ([keyPath isEqualToString:@"status"]) {
-        IndexedPlayerItem *playerItem = (IndexedPlayerItem *)object;
-        AVPlayerItemStatus status = AVPlayerItemStatusUnknown;
-        NSNumber *statusNumber = change[NSKeyValueChangeNewKey];
-        if ([statusNumber isKindOfClass:[NSNumber class]]) {
-            status = statusNumber.intValue;
-        }
-        [playerItem.audioSource onStatusChanged:status];
-        switch (status) {
-            case AVPlayerItemStatusReadyToPlay: {
-                if (playerItem != _player.currentItem) return;
-                // Detect buffering in different ways depending on whether we're playing
-                if (_playing) {
-                    if (@available(macOS 10.12, iOS 10.0, *)) {
-                        if (_player.timeControlStatus == AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate) {
-                            [self enterBuffering:@"ready to play: playing, waitingToPlay"];
-                        } else {
-                            [self leaveBuffering:@"ready to play: playing, !waitingToPlay"];
-                        }
-                        [self updatePosition];
-                    } else {
-                        // If this happens when we're playing, check whether buffer is confirmed
-                        if (_bufferUnconfirmed && !_player.currentItem.playbackBufferFull) {
-                            // Stay in bufering - XXX Test
-                            [self enterBuffering:@"ready to play: playing, bufferUnconfirmed && !playbackBufferFull"];
-                        } else {
-                            if (_player.currentItem.playbackBufferEmpty) {
-                                // !_player.currentItem.playbackLikelyToKeepUp;
-                                [self enterBuffering:@"ready to play: playing, playbackBufferEmpty"];
-                            } else {
-                                [self leaveBuffering:@"ready to play: playing, !playbackBufferEmpty"];
-                            }
-                            [self updatePosition];
-                        }
-                    }
-                } else {
-                    if (_player.currentItem.playbackBufferEmpty) {
-                        [self enterBuffering:@"ready to play: !playing, playbackBufferEmpty"];
-                        // || !_player.currentItem.playbackLikelyToKeepUp;
-                    } else {
-                        [self leaveBuffering:@"ready to play: !playing, !playbackBufferEmpty"];
-                    }
-                    [self updatePosition];
-                }
-                [self broadcastPlaybackEvent];
-                if (_loadResult) {
-                    _loadResult(@{@"duration": @([self getDurationMicroseconds])});
-                    _loadResult = nil;
-                }
-                break;
-            }
-            case AVPlayerItemStatusFailed: {
-                //NSLog(@"AVPlayerItemStatusFailed");
-                [self sendErrorForItem:playerItem];
-                break;
-            }
-            case AVPlayerItemStatusUnknown:
-                break;
-        }
-    } else if ([keyPath isEqualToString:@"playbackBufferEmpty"] || [keyPath isEqualToString:@"playbackBufferFull"]) {
-        // Use these values to detect buffering.
-        IndexedPlayerItem *playerItem = (IndexedPlayerItem *)object;
-        if (playerItem != _player.currentItem) return;
-        // If there's a seek in progress, these values are unreliable
-        if (CMTIME_IS_VALID(_seekPos)) return;
-        // Detect buffering in different ways depending on whether we're playing
-        if (_playing) {
-            if (@available(macOS 10.12, iOS 10.0, *)) {
-                // We handle this with timeControlStatus instead.
-            } else {
-                if (_bufferUnconfirmed && playerItem.playbackBufferFull) {
-                    _bufferUnconfirmed = NO;
-                    [self leaveBuffering:@"playing, _bufferUnconfirmed && playbackBufferFull"];
-                    [self updatePosition];
-                    //NSLog(@"Buffering confirmed! leaving buffering");
-                    [self broadcastPlaybackEvent];
-                }
-            }
-        } else {
-            if (playerItem.playbackBufferEmpty) {
-                [self enterBuffering:@"!playing, playbackBufferEmpty"];
-                [self updatePosition];
-                [self broadcastPlaybackEvent];
-            } else if (!playerItem.playbackBufferEmpty || playerItem.playbackBufferFull) {
-                _processingState = ready;
-                [self leaveBuffering:@"!playing, !playbackBufferEmpty || playbackBufferFull"];
-                [self updatePosition];
-                [self broadcastPlaybackEvent];
-            }
-        }
-    /* } else if ([keyPath isEqualToString:@"playbackLikelyToKeepUp"]) { */
-    } else if ([keyPath isEqualToString:@"timeControlStatus"]) {
-        if (@available(macOS 10.12, iOS 10.0, *)) {
-            AVPlayerTimeControlStatus status = AVPlayerTimeControlStatusPaused;
-            NSNumber *statusNumber = change[NSKeyValueChangeNewKey];
-            if ([statusNumber isKindOfClass:[NSNumber class]]) {
-                status = statusNumber.intValue;
-            }
-            switch (status) {
-                case AVPlayerTimeControlStatusPaused:
-                    //NSLog(@"AVPlayerTimeControlStatusPaused");
-                    break;
-                case AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate:
-                    //NSLog(@"AVPlayerTimeControlStatusWaitingToPlayAtSpecifiedRate");
-                    if (_processingState != completed) {
-                        [self enterBuffering:@"timeControlStatus"];
-                        [self updatePosition];
-                        [self broadcastPlaybackEvent];
-                    } else {
-                        //NSLog(@"Ignoring wait signal because we reached the end");
-                    }
-                    break;
-                case AVPlayerTimeControlStatusPlaying:
-                    [self leaveBuffering:@"timeControlStatus"];
-                    [self updatePosition];
-                    [self broadcastPlaybackEvent];
-                    break;
-            }
-        }
-    } else if ([keyPath isEqualToString:@"currentItem"] && _player.currentItem) {
-        IndexedPlayerItem *playerItem = (IndexedPlayerItem *)change[NSKeyValueChangeNewKey];
-        //IndexedPlayerItem *oldPlayerItem = (IndexedPlayerItem *)change[NSKeyValueChangeOldKey];
-        if (playerItem.status == AVPlayerItemStatusFailed) {
-            if ([_orderInv[_index] intValue] + 1 < [_order count]) {
-                // account for automatic move to next item
-                _index = [_order[[_orderInv[_index] intValue] + 1] intValue];
-                //NSLog(@"advance to next on error: index = %d", _index);
-                [self updateEndAction];
-                [self broadcastPlaybackEvent];
-            } else {
-                //NSLog(@"error on last item");
-            }
-            return;
-        } else {
-            int expectedIndex = [self indexForItem:playerItem];
-            if (_index != expectedIndex) {
-                // AVQueuePlayer will sometimes skip over error items without
-                // notifying this observer.
-                //NSLog(@"Queue change detected. Adjusting index from %d -> %d", _index, expectedIndex);
-                _index = expectedIndex;
-                [self updateEndAction];
-                [self broadcastPlaybackEvent];
-            }
-        }
-        //NSLog(@"currentItem changed. _index=%d", _index);
-        _bufferUnconfirmed = YES;
-        // If we've skipped or transitioned to a new item and we're not
-        // currently in the middle of a seek
-        /* if (CMTIME_IS_INVALID(_seekPos) && playerItem.status == AVPlayerItemStatusReadyToPlay) { */
-        /*     [self updatePosition]; */
-        /*     IndexedAudioSource *source = playerItem.audioSource; */
-        /*     // We should already be at position zero but for */
-        /*     // ClippingAudioSource it might be off by some milliseconds so we */
-        /*     // consider anything <= 100 as close enough. */
-        /*     if ((int)(1000 * CMTimeGetSeconds(source.position)) > 100) { */
-        /*         NSLog(@"On currentItem change, seeking back to zero"); */
-        /*         BOOL shouldResumePlayback = NO; */
-        /*         AVPlayerActionAtItemEnd originalEndAction = _player.actionAtItemEnd; */
-        /*         if (_playing && CMTimeGetSeconds(CMTimeSubtract(source.position, source.duration)) >= 0) { */
-        /*             NSLog(@"Need to pause while rewinding because we're at the end"); */
-        /*             shouldResumePlayback = YES; */
-        /*             _player.actionAtItemEnd = AVPlayerActionAtItemEndPause; */
-        /*             [_player pause]; */
-        /*         } */
-        /*         [self enterBuffering:@"currentItem changed, seeking"]; */
-        /*         [self updatePosition]; */
-        /*         [self broadcastPlaybackEvent]; */
-        /*         __weak __typeof__(self) weakSelf = self; */
-        /*         [source seek:kCMTimeZero completionHandler:^(BOOL finished) { */
-        /*             [weakSelf leaveBuffering:@"currentItem changed, finished seek"]; */
-        /*             [weakSelf updatePosition]; */
-        /*             [weakSelf broadcastPlaybackEvent]; */
-        /*             if (shouldResumePlayback) { */
-        /*                 weakSelf.player.actionAtItemEnd = originalEndAction; */
-        /*                 // TODO: This logic is almost duplicated in seek. See if we can reuse this code. */
-        /*                 weakSelf.player.rate = weakSelf.speed; */
-        /*             } */
-        /*         }]; */
-        /*     } else { */
-        /*         // Already at zero, no need to seek. */
-        /*     } */
-        /* } */
-
-        if (_justAdvanced) {
-            IndexedAudioSource *audioSource = playerItem.audioSource;
-            if (_loopMode == loopOne) {
-                [audioSource flip];
-                [self enqueueFrom:_index];
-            } else if (_loopMode == loopAll) {
-                if (_index == [_order[0] intValue] && playerItem == audioSource.playerItem2) {
-                    [audioSource flip];
-                    [self enqueueFrom:_index];
-                } else {
-                    [self updateEndAction];
-                }
-            }
-            _justAdvanced = NO;
-        }
-    } else if ([keyPath isEqualToString:@"loadedTimeRanges"]) {
-        IndexedPlayerItem *playerItem = (IndexedPlayerItem *)object;
-        if (playerItem != _player.currentItem) return;
-        int pos = [self getBufferedPosition];
-        if (pos != _bufferedPosition) {
-            _bufferedPosition = pos;
-            [self broadcastPlaybackEvent];
-        }
-    }
-}
-
-- (void)sendErrorForItem:(IndexedPlayerItem *)playerItem {
-    FlutterError *flutterError = [FlutterError errorWithCode:[NSString stringWithFormat:@"%d", (int)playerItem.error.code]
-                                                     message:playerItem.error.localizedDescription
-                                                     details:nil];
-    [self sendError:flutterError playerItem:playerItem];
-}
-
-- (void)sendError:(FlutterError *)flutterError playerItem:(IndexedPlayerItem *)playerItem {
-    //NSLog(@"sendError");
-    if (_loadResult && playerItem == _player.currentItem) {
-        _loadResult(flutterError);
-        _loadResult = nil;
-    }
-    // Broadcast all errors even if they aren't on the current item.
-    [_eventChannel sendEvent:flutterError];
-}
-
-- (void)abortExistingConnection {
-    FlutterError *flutterError = [FlutterError errorWithCode:@"abort"
-                                                     message:@"Connection aborted"
-                                                     details:nil];
-    [self sendError:flutterError playerItem:nil];
-}
-
-- (int)indexForItem:(IndexedPlayerItem *)playerItem {
-    for (int i = 0; i < _indexedAudioSources.count; i++) {
-        if (_indexedAudioSources[i].playerItem == playerItem || _indexedAudioSources[i].playerItem2 == playerItem) {
-            return i;
-        }
-    }
-    return -1;
-}
-
-- (void)play {
-    [self play:nil];
-}
-
-- (void)play:(FlutterResult)result {
-    if (_playing) {
-        if (result) {
-            result(@{});
-        }
-        return;
-    }
-    if (result) {
-        if (_playResult) {
-            //NSLog(@"INTERRUPTING PLAY");
-            _playResult(@{});
-        }
-        _playResult = result;
-    }
-    _playing = YES;
-    _player.rate = _speed;
-    [self updatePosition];
-    if (@available(macOS 10.12, iOS 10.0, *)) {}
-    else {
-        if (_bufferUnconfirmed && !_player.currentItem.playbackBufferFull) {
-            [self enterBuffering:@"play, _bufferUnconfirmed && !playbackBufferFull"];
-            [self broadcastPlaybackEvent];
-        }
-    }
-}
-
-- (void)pause {
-    if (!_playing) return;
-    _playing = NO;
-    [_player pause];
-    [self updatePosition];
-    [self broadcastPlaybackEvent];
-    if (_playResult) {
-        //NSLog(@"PLAY FINISHED DUE TO PAUSE");
-        _playResult(@{});
-        _playResult = nil;
-    }
-}
-
-- (void)complete {
-    [self updatePosition];
-    _processingState = completed;
-    [self broadcastPlaybackEvent];
-    if (_playResult) {
-        //NSLog(@"PLAY FINISHED DUE TO COMPLETE");
-        _playResult(@{});
-        _playResult = nil;
-    }
-}
-
-- (void)setVolume:(float)volume {
-    _volume = volume;
-    if (_player) {
-        [_player setVolume:volume];
-    }
-}
-
-- (void)setSpeed:(float)speed {
-    // NOTE: We ideally should check _player.currentItem.canPlaySlowForward and
-    // canPlayFastForward, but these properties are unreliable and the official
-    // documentation is unclear and contradictory.
-    //
-    // Source #1:
-    // https://developer.apple.com/documentation/avfoundation/avplayer/1388846-rate?language=objc
-    //
-    //     Rates other than 0.0 and 1.0 can be used if the associated player
-    //     item returns YES for the AVPlayerItem properties canPlaySlowForward
-    //     or canPlayFastForward.
-    //
-    // Source #2:
-    // https://developer.apple.com/library/archive/qa/qa1772/_index.html
-    //
-    //     An AVPlayerItem whose status property equals
-    //     AVPlayerItemStatusReadyToPlay can be played at rates between 1.0 and
-    //     2.0, inclusive, even if AVPlayerItem.canPlayFastForward is NO.
-    //     AVPlayerItem.canPlayFastForward indicates whether the item can be
-    //     played at rates greater than 2.0.
-    //
-    // But in practice, it appears that even if AVPlayerItem.canPlayFastForward
-    // is NO, rates greater than 2.0 still work sometimes.
-    //
-    // So for now, we just let the app pass in any speed and hope for the best.
-    // There is no way to reliably query whether the requested speed is
-    // supported.
-    _speed = speed;
-    if (_playing && _player) {
-        _player.rate = speed;
-    }
-    [self updatePosition];
-}
-
-- (void)setLoopMode:(int)loopMode {
-    if (loopMode == _loopMode) return;
-    _loopMode = loopMode;
-    [self enqueueFrom:_index];
-}
-
-- (void)updateEndAction {
-    // Should be called in the following situations:
-    // - when the audio source changes
-    // - when _index changes
-    // - when the loop mode changes.
-    // - when the shuffle order changes. (TODO)
-    // - when the shuffle mode changes.
-    if (!_player) return;
-    if (_audioSource && (_loopMode != loopOff || ([_order count] > 0 && [_orderInv[_index] intValue] + 1 < [_order count]))) {
-        _player.actionAtItemEnd = AVPlayerActionAtItemEndAdvance;
-    } else {
-        _player.actionAtItemEnd = AVPlayerActionAtItemEndPause; // AVPlayerActionAtItemEndNone
-    }
-}
-
-- (void)setShuffleModeEnabled:(BOOL)shuffleModeEnabled {
-    //NSLog(@"setShuffleModeEnabled: %d", shuffleModeEnabled);
-    _shuffleModeEnabled = shuffleModeEnabled;
-    if (!_audioSource) return;
-
-    [self updateOrder];
-
-    [self enqueueFrom:_index];
-}
-
-- (void)setShuffleOrder:(NSDictionary *)dict {
-    if (!_audioSource) return;
-
-    [_audioSource decodeShuffleOrder:dict];
-
-    [self updateOrder];
-
-    [self enqueueFrom:_index];
-}
-
-- (void)dumpQueue {
-    for (int i = 0; i < _player.items.count; i++) {
-        IndexedPlayerItem *playerItem = (IndexedPlayerItem *)_player.items[i];
-        int j = [self indexForItem:playerItem];
-        NSLog(@"- %d", j);
-    }
-}
-
-- (void)setAutomaticallyWaitsToMinimizeStalling:(bool)automaticallyWaitsToMinimizeStalling {
-    _automaticallyWaitsToMinimizeStalling = automaticallyWaitsToMinimizeStalling;
-    if (@available(macOS 10.12, iOS 10.0, *)) {
-        if(_player) {
-            _player.automaticallyWaitsToMinimizeStalling = automaticallyWaitsToMinimizeStalling;
-        }
-    }
-}
-
-- (void)setCanUseNetworkResourcesForLiveStreamingWhilePaused:(BOOL)enabled {
-    _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused = enabled;
-    if (!_indexedAudioSources) return;
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        [_indexedAudioSources[i] applyCanUseNetworkResourcesForLiveStreamingWhilePaused];
-    }
-}
-
-- (void)setPreferredPeakBitRate:(NSNumber *)preferredPeakBitRate {
-    _loadControl.preferredPeakBitRate = preferredPeakBitRate;
-    if (!_indexedAudioSources) return;
-    for (int i = 0; i < [_indexedAudioSources count]; i++) {
-        [_indexedAudioSources[i] applyPreferredPeakBitRate];
-    }
-}
-
-- (void)seek:(CMTime)position index:(NSNumber *)newIndex completionHandler:(void (^)(BOOL))completionHandler {
-    if (_processingState == none || _processingState == loading) {
-        if (completionHandler) {
-            completionHandler(NO);
-        }
-        return;
-    }
-    int index = _index;
-    if (newIndex != (id)[NSNull null]) {
-        index = [newIndex intValue];
-    }
-    if (index != _index) {
-        // Jump to a new item
-        /* if (_playing && index == _index + 1) { */
-        /*     // Special case for jumping to the very next item */
-        /*     NSLog(@"seek to next item: %d -> %d", _index, index); */
-        /*     [_indexedAudioSources[_index] seek:kCMTimeZero]; */
-        /*     _index = index; */
-        /*     [_player advanceToNextItem]; */
-        /*     [self broadcastPlaybackEvent]; */
-        /* } else */
-        {
-            // Jump to a distant item
-            //NSLog(@"seek# jump to distant item: %d -> %d", _index, index);
-            if (_playing) {
-                [_player pause];
-            }
-            [_indexedAudioSources[_index] seek:kCMTimeZero];
-            // The "currentItem" key observer will respect that a seek is already in progress
-            _seekPos = position;
-            [self updatePosition];
-            [self enqueueFrom:index];
-            IndexedAudioSource *source = _indexedAudioSources[_index];
-            if (abs((int)(1000 * CMTimeGetSeconds(CMTimeSubtract(source.position, position)))) > 100) {
-                [self enterBuffering:@"seek to index"];
-                [self updatePosition];
-                [self broadcastPlaybackEvent];
-                [source seek:position completionHandler:^(BOOL finished) {
-                    if (@available(macOS 10.12, iOS 10.0, *)) {
-                        if (self->_playing) {
-                            // Handled by timeControlStatus
-                        } else {
-                            if (self->_bufferUnconfirmed && !self->_player.currentItem.playbackBufferFull) {
-                                // Stay in buffering
-                            } else if (source.playerItem.status == AVPlayerItemStatusReadyToPlay) {
-                                [self leaveBuffering:@"seek to index finished, (!bufferUnconfirmed || playbackBufferFull) && ready to play"];
-                                [self updatePosition];
-                                [self broadcastPlaybackEvent];
-                            }
-                        }
-                    } else {
-                        if (self->_bufferUnconfirmed && !self->_player.currentItem.playbackBufferFull) {
-                            // Stay in buffering
-                        } else if (source.playerItem.status == AVPlayerItemStatusReadyToPlay) {
-                            [self leaveBuffering:@"seek to index finished, (!bufferUnconfirmed || playbackBufferFull) && ready to play"];
-                            [self updatePosition];
-                            [self broadcastPlaybackEvent];
-                        }
-                    }
-                    if (self->_playing) {
-                        self->_player.rate = self->_speed;
-                    }
-                    self->_seekPos = kCMTimeInvalid;
-                    [self broadcastPlaybackEvent];
-                    if (completionHandler) {
-                        completionHandler(finished);
-                    }
-                }];
-            } else {
-                _seekPos = kCMTimeInvalid;
-                if (_playing) {
-                    if (@available(iOS 10.0, *)) {
-                        // NOTE: Re-enable this line only after figuring out
-                        // how to detect buffering when buffered audio is not
-                        // immediately available.
-                        //[_player playImmediatelyAtRate:_speed];
-                        _player.rate = _speed;
-                    } else {
-                        _player.rate = _speed;
-                    }
-                }
-                completionHandler(YES);
-            }
-        }
-    } else {
-        // Seek within an item
-        if (_playing) {
-            [_player pause];
-        }
-        _seekPos = position;
-        //NSLog(@"seek. enter buffering. pos = %d", (int)(1000*CMTimeGetSeconds(_indexedAudioSources[_index].position)));
-        // TODO: Move this into a separate method so it can also
-        // be used in skip.
-        [self enterBuffering:@"seek"];
-        [self updatePosition];
-        [self broadcastPlaybackEvent];
-        [_indexedAudioSources[_index] seek:position completionHandler:^(BOOL finished) {
-            [self updatePosition];
-            if (self->_playing) {
-                // If playing, buffering will be detected either by:
-                // 1. checkForDiscontinuity
-                // 2. timeControlStatus
-                if (@available(iOS 10.0, *)) {
-                    // NOTE: Re-enable this line only after figuring out how to
-                    // detect buffering when buffered audio is not immediately
-                    // available.
-                    //[_player playImmediatelyAtRate:_speed];
-                    self->_player.rate = self->_speed;
-                } else {
-                    self->_player.rate = self->_speed;
-                }
-            } else {
-                // If not playing, there is no reliable way to detect
-                // when buffering has completed, so we use
-                // !playbackBufferEmpty. Although this always seems to
-                // be full even right after a seek.
-                if (self->_player.currentItem.playbackBufferEmpty) {
-                    [self enterBuffering:@"seek finished, playbackBufferEmpty"];
-                } else {
-                    [self leaveBuffering:@"seek finished, !playbackBufferEmpty"];
-                }
-                [self updatePosition];
-                if (self->_processingState != buffering) {
-                    [self broadcastPlaybackEvent];
-                }
-            }
-            self->_seekPos = kCMTimeInvalid;
-            [self broadcastPlaybackEvent];
-            if (completionHandler) {
-                completionHandler(finished);
-            }
-        }];
-    }
-}
-
-- (void)dispose {
-    if (!_player) return;
-    if (_processingState != none) {
-        [_player pause];
-        _processingState = none;
-        // If used just before destroying the current FlutterEngine, this will result in:
-        // NSInternalInconsistencyException: 'Sending a message before the FlutterEngine has been run.'
-        //[self broadcastPlaybackEvent];
-    }
-    if (_timeObserver) {
-        [_player removeTimeObserver:_timeObserver];
-        _timeObserver = 0;
-    }
-    if (_indexedAudioSources) {
-        for (int i = 0; i < [_indexedAudioSources count]; i++) {
-            [self removeItemObservers:_indexedAudioSources[i].playerItem];
-            if (_indexedAudioSources[i].playerItem2) {
-                [self removeItemObservers:_indexedAudioSources[i].playerItem2];
-            }
-        }
-        _indexedAudioSources = nil;
-    }
-    _audioSource = nil;
-    if (_player) {
-        [_player removeObserver:self forKeyPath:@"currentItem"];
-        if (@available(macOS 10.12, iOS 10.0, *)) {
-            [_player removeObserver:self forKeyPath:@"timeControlStatus"];
-        }
-        _player = nil;
-    }
-    // Untested:
-    [_eventChannel dispose];
-    [_dataEventChannel dispose];
-    [_methodChannel setMethodCallHandler:nil];
-}
-
-@end
diff --git a/just_audio/darwin/Classes/AudioSource.m b/just_audio/darwin/Classes/AudioSource.m
deleted file mode 100644
index 899055754..000000000
--- a/just_audio/darwin/Classes/AudioSource.m
+++ /dev/null
@@ -1,36 +0,0 @@
-#import "AudioSource.h"
-#import <AVFoundation/AVFoundation.h>
-
-@implementation AudioSource {
-    NSString *_sourceId;
-}
-
-- (instancetype)initWithId:(NSString *)sid {
-    self = [super init];
-    NSAssert(self, @"super init cannot be nil");
-    _sourceId = sid;
-    return self;
-}
-
-- (NSString *)sourceId {
-    return _sourceId;
-}
-
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex {
-    return 0;
-}
-
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches {
-    if ([_sourceId isEqualToString:sourceId]) {
-        [matches addObject:self];
-    }
-}
-
-- (NSArray<NSNumber *> *)getShuffleIndices {
-    return @[];
-}
-
-- (void)decodeShuffleOrder:(NSDictionary *)dict {
-}
-
-@end
diff --git a/just_audio/darwin/Classes/AudioSource.swift b/just_audio/darwin/Classes/AudioSource.swift
new file mode 100644
index 000000000..9966bc42d
--- /dev/null
+++ b/just_audio/darwin/Classes/AudioSource.swift
@@ -0,0 +1,36 @@
+import AVFoundation
+
+class AudioSource {
+    let sourceId: String
+
+    init(sid: String) {
+        sourceId = sid
+    }
+
+    func buildSequence() -> [IndexedAudioSource] {
+        return []
+    }
+
+    func getShuffleIndices() -> [Int] {
+        return []
+    }
+
+    static func fromListJson(_ data: [[String: Any]]) throws -> [AudioSource] {
+        return try data.map { item in
+            try AudioSource.fromJson(item)
+        }
+    }
+
+    static func fromJson(_ data: [String: Any]) throws -> AudioSource {
+        let type = data["type"] as! String
+
+        switch type {
+        case "progressive":
+            return UriAudioSource(sid: data["id"] as! String, uri: data["uri"] as! String)
+        case "concatenating":
+            return ConcatenatingAudioSource(sid: data["id"] as! String, audioSources: try AudioSource.fromListJson(data["children"] as! [[String: Any]]), shuffleOrder: data["shuffleOrder"] as! [Int])
+        default:
+            throw NotSupportedError(value: type, "When decoding audio source")
+        }
+    }
+}
diff --git a/just_audio/darwin/Classes/BandEqualizerData.swift b/just_audio/darwin/Classes/BandEqualizerData.swift
new file mode 100644
index 000000000..4ba538d29
--- /dev/null
+++ b/just_audio/darwin/Classes/BandEqualizerData.swift
@@ -0,0 +1,14 @@
+//
+//  BandEqualizerData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct BandEqualizerData: Codable {
+    let index: Int
+    let centerFrequency: Float
+    let gain: Float
+}
diff --git a/just_audio/darwin/Classes/BetterEventChannel.m b/just_audio/darwin/Classes/BetterEventChannel.m
deleted file mode 100644
index d92a05626..000000000
--- a/just_audio/darwin/Classes/BetterEventChannel.m
+++ /dev/null
@@ -1,37 +0,0 @@
-#import "BetterEventChannel.h"
-
-@implementation BetterEventChannel {
-    FlutterEventChannel *_eventChannel;
-    FlutterEventSink _eventSink;
-}
-
-- (instancetype)initWithName:(NSString*)name messenger:(NSObject<FlutterBinaryMessenger> *)messenger {
-    self = [super init];
-    NSAssert(self, @"super init cannot be nil");
-    _eventChannel =
-        [FlutterEventChannel eventChannelWithName:name binaryMessenger:messenger];
-    [_eventChannel setStreamHandler:self];
-    _eventSink = nil;
-    return self;
-}
-
-- (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)eventSink {
-    _eventSink = eventSink;
-    return nil;
-}
-
-- (FlutterError*)onCancelWithArguments:(id)arguments {
-    _eventSink = nil;
-    return nil;
-}
-
-- (void)sendEvent:(id)event {
-    if (!_eventSink) return;
-    _eventSink(event);
-}
-
-- (void)dispose {
-    [_eventChannel setStreamHandler:nil];
-}
-
-@end
diff --git a/just_audio/darwin/Classes/BetterEventChannel.swift b/just_audio/darwin/Classes/BetterEventChannel.swift
new file mode 100644
index 000000000..774f0d702
--- /dev/null
+++ b/just_audio/darwin/Classes/BetterEventChannel.swift
@@ -0,0 +1,30 @@
+import Flutter
+
+class BetterEventChannel: NSObject, FlutterStreamHandler {
+    let eventChannel: FlutterEventChannel
+    var eventSink: FlutterEventSink?
+
+    init(name: String, messenger: FlutterBinaryMessenger) {
+        eventChannel = FlutterEventChannel(name: name, binaryMessenger: messenger)
+        super.init()
+        eventChannel.setStreamHandler(self)
+    }
+
+    func onListen(withArguments _: Any?, eventSink events: @escaping FlutterEventSink) -> FlutterError? {
+        eventSink = events
+        return nil
+    }
+
+    func onCancel(withArguments _: Any?) -> FlutterError? {
+        eventSink = nil
+        return nil
+    }
+
+    func sendEvent(_ event: Any) {
+        eventSink?(event)
+    }
+
+    func dispose() {
+        eventChannel.setStreamHandler(nil)
+    }
+}
diff --git a/just_audio/darwin/Classes/ClippingAudioSource.m b/just_audio/darwin/Classes/ClippingAudioSource.m
deleted file mode 100644
index f976925f3..000000000
--- a/just_audio/darwin/Classes/ClippingAudioSource.m
+++ /dev/null
@@ -1,113 +0,0 @@
-#import "AudioSource.h"
-#import "ClippingAudioSource.h"
-#import "IndexedPlayerItem.h"
-#import "UriAudioSource.h"
-#import <AVFoundation/AVFoundation.h>
-
-@implementation ClippingAudioSource {
-    UriAudioSource *_audioSource;
-    CMTime _start;
-    CMTime _end;
-}
-
-- (instancetype)initWithId:(NSString *)sid audioSource:(UriAudioSource *)audioSource start:(NSNumber *)start end:(NSNumber *)end {
-    self = [super initWithId:sid];
-    NSAssert(self, @"super init cannot be nil");
-    _audioSource = audioSource;
-    _start = start == (id)[NSNull null] ? kCMTimeZero : CMTimeMake([start longLongValue], 1000000);
-    _end = end == (id)[NSNull null] ? kCMTimeInvalid : CMTimeMake([end longLongValue], 1000000);
-    return self;
-}
-
-- (UriAudioSource *)audioSource {
-    return _audioSource;
-}
-
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches {
-    [super findById:sourceId matches:matches];
-    [_audioSource findById:sourceId matches:matches];
-}
-
-- (void)attach:(AVQueuePlayer *)player initialPos:(CMTime)initialPos {
-    // Force super.attach to correct for the initial position.
-    if (CMTIME_IS_INVALID(initialPos)) {
-        initialPos = kCMTimeZero;
-    }
-    // Prepare clip to start/end at the right timestamps.
-    _audioSource.playerItem.forwardPlaybackEndTime = _end;
-    [super attach:player initialPos:initialPos];
-}
-
-- (IndexedPlayerItem *)playerItem {
-    return _audioSource.playerItem;
-}
-
-- (IndexedPlayerItem *)playerItem2 {
-    return _audioSource.playerItem2;
-}
-
-- (NSArray<NSNumber *> *)getShuffleIndices {
-    return @[@(0)];
-}
-
-- (void)play:(AVQueuePlayer *)player {
-}
-
-- (void)pause:(AVQueuePlayer *)player {
-}
-
-- (void)stop:(AVQueuePlayer *)player {
-}
-
-- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler {
-    if (!completionHandler || (self.playerItem.status == AVPlayerItemStatusReadyToPlay)) {
-        CMTime absPosition = CMTimeAdd(_start, position);
-        [_audioSource.playerItem seekToTime:absPosition toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:completionHandler];
-    } else {
-        [super seek:position completionHandler:completionHandler];
-    }
-}
-
-- (void)flip {
-    [_audioSource flip];
-}
-
-- (void)preparePlayerItem2 {
-    if (self.playerItem2) return;
-    [_audioSource preparePlayerItem2];
-    IndexedPlayerItem *item = _audioSource.playerItem2;
-    // Prepare loop clip to start/end at the right timestamps.
-    item.forwardPlaybackEndTime = _end;
-    [item seekToTime:_start toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:nil];
-}
-
-- (CMTime)duration {
-    return CMTimeSubtract(CMTIME_IS_INVALID(_end) ? self.playerItem.duration : _end, _start);
-}
-
-- (void)setDuration:(CMTime)duration {
-}
-
-- (CMTime)position {
-    return CMTimeSubtract(self.playerItem.currentTime, _start);
-}
-
-- (CMTime)bufferedPosition {
-    CMTime pos = CMTimeSubtract(_audioSource.bufferedPosition, _start);
-    CMTime dur = [self duration];
-    return CMTimeCompare(pos, dur) >= 0 ? dur : pos;
-}
-
-- (void)applyPreferredForwardBufferDuration {
-    [_audioSource applyPreferredForwardBufferDuration];
-}
-
-- (void)applyCanUseNetworkResourcesForLiveStreamingWhilePaused {
-    [_audioSource applyCanUseNetworkResourcesForLiveStreamingWhilePaused];
-}
-
-- (void)applyPreferredPeakBitRate {
-    [_audioSource applyPreferredPeakBitRate];
-}
-
-@end
diff --git a/just_audio/darwin/Classes/ConcatenatingAudioSource.m b/just_audio/darwin/Classes/ConcatenatingAudioSource.m
deleted file mode 100644
index 5385c7be3..000000000
--- a/just_audio/darwin/Classes/ConcatenatingAudioSource.m
+++ /dev/null
@@ -1,92 +0,0 @@
-#import "AudioSource.h"
-#import "ConcatenatingAudioSource.h"
-#import <AVFoundation/AVFoundation.h>
-#import <stdlib.h>
-
-@implementation ConcatenatingAudioSource {
-    NSMutableArray<AudioSource *> *_audioSources;
-    NSArray<NSNumber *> *_shuffleOrder;
-}
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSMutableArray<AudioSource *> *)audioSources shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder {
-    self = [super initWithId:sid];
-    NSAssert(self, @"super init cannot be nil");
-    _audioSources = audioSources;
-    _shuffleOrder = shuffleOrder;
-    return self;
-}
-
-- (int)count {
-    return (int)_audioSources.count;
-}
-
-- (void)insertSource:(AudioSource *)audioSource atIndex:(int)index {
-    [_audioSources insertObject:audioSource atIndex:index];
-}
-
-- (void)removeSourcesFromIndex:(int)start toIndex:(int)end {
-    if (end == -1) end = (int)_audioSources.count;
-    for (int i = start; i < end; i++) {
-        [_audioSources removeObjectAtIndex:start];
-    }
-}
-
-- (void)moveSourceFromIndex:(int)currentIndex toIndex:(int)newIndex {
-    AudioSource *source = _audioSources[currentIndex];
-    [_audioSources removeObjectAtIndex:currentIndex];
-    [_audioSources insertObject:source atIndex:newIndex];
-}
-
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex {
-    for (int i = 0; i < [_audioSources count]; i++) {
-        treeIndex = [_audioSources[i] buildSequence:sequence treeIndex:treeIndex];
-    }
-    return treeIndex;
-}
-
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches {
-    [super findById:sourceId matches:matches];
-    for (int i = 0; i < [_audioSources count]; i++) {
-        [_audioSources[i] findById:sourceId matches:matches];
-    }
-}
-
-- (NSArray<NSNumber *> *)getShuffleIndices {
-    NSMutableArray<NSNumber *> *order = [NSMutableArray new];
-    int offset = (int)[order count];
-    NSMutableArray<NSArray<NSNumber *> *> *childOrders = [NSMutableArray new]; // array of array of ints
-    for (int i = 0; i < [_audioSources count]; i++) {
-        AudioSource *audioSource = _audioSources[i];
-        NSArray<NSNumber *> *childShuffleIndices = [audioSource getShuffleIndices];
-        NSMutableArray<NSNumber *> *offsetChildShuffleOrder = [NSMutableArray new];
-        for (int j = 0; j < [childShuffleIndices count]; j++) {
-            [offsetChildShuffleOrder addObject:@([childShuffleIndices[j] integerValue] + offset)];
-        }
-        [childOrders addObject:offsetChildShuffleOrder];
-        offset += [childShuffleIndices count];
-    }
-    for (int i = 0; i < [_audioSources count]; i++) {
-        [order addObjectsFromArray:childOrders[[_shuffleOrder[i] integerValue]]];
-    }
-    return order;
-}
-
-- (void)setShuffleOrder:(NSArray<NSNumber *> *)shuffleOrder {
-    _shuffleOrder = shuffleOrder;
-}
-
-- (void)decodeShuffleOrder:(NSDictionary *)dict {
-    _shuffleOrder = (NSArray<NSNumber *> *)dict[@"shuffleOrder"];
-    NSArray *dictChildren = (NSArray *)dict[@"children"];
-    if (_audioSources.count != dictChildren.count) {
-        NSLog(@"decodeShuffleOrder Concatenating children don't match");
-        return;
-    }
-    for (int i = 0; i < [_audioSources count]; i++) {
-        AudioSource *child = _audioSources[i];
-        NSDictionary *dictChild = (NSDictionary *)dictChildren[i];
-        [child decodeShuffleOrder:dictChild];
-    }
-}
-
-@end
diff --git a/just_audio/darwin/Classes/ConcatenatingAudioSource.swift b/just_audio/darwin/Classes/ConcatenatingAudioSource.swift
new file mode 100644
index 000000000..dfc533166
--- /dev/null
+++ b/just_audio/darwin/Classes/ConcatenatingAudioSource.swift
@@ -0,0 +1,22 @@
+import AVFoundation
+
+class ConcatenatingAudioSource: AudioSource {
+    let audioSources: [AudioSource]
+    let shuffleOrder: [Int]
+
+    init(sid: String, audioSources: [AudioSource], shuffleOrder: [Int]) {
+        self.audioSources = audioSources
+        self.shuffleOrder = shuffleOrder
+        super.init(sid: sid)
+    }
+
+    override func buildSequence() -> [IndexedAudioSource] {
+        return audioSources.flatMap {
+            $0.buildSequence()
+        }
+    }
+
+    override func getShuffleIndices() -> [Int] {
+        return shuffleOrder
+    }
+}
diff --git a/just_audio/darwin/Classes/EffectData.swift b/just_audio/darwin/Classes/EffectData.swift
new file mode 100644
index 000000000..14c39d554
--- /dev/null
+++ b/just_audio/darwin/Classes/EffectData.swift
@@ -0,0 +1,12 @@
+//
+//  EffectData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+protocol EffectData {
+    var type: EffectType { get }
+}
diff --git a/just_audio/darwin/Classes/EffectType.swift b/just_audio/darwin/Classes/EffectType.swift
new file mode 100644
index 000000000..0b754e493
--- /dev/null
+++ b/just_audio/darwin/Classes/EffectType.swift
@@ -0,0 +1,12 @@
+//
+//  EffectType.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum EffectType: String, Codable {
+    case darwinEqualizer = "DarwinEqualizer"
+}
diff --git a/just_audio/darwin/Classes/EqualizerEffectData.swift b/just_audio/darwin/Classes/EqualizerEffectData.swift
new file mode 100644
index 000000000..0defd7b2c
--- /dev/null
+++ b/just_audio/darwin/Classes/EqualizerEffectData.swift
@@ -0,0 +1,18 @@
+//
+//  EqualizerEffectData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct EqualizerEffectData: EffectData, Codable {
+    let type: EffectType
+    let enabled: Bool
+    let parameters: ParamsEqualizerData
+
+    static func fromJson(_ map: [String: Any]) -> EqualizerEffectData {
+        return try! JSONDecoder().decode(EqualizerEffectData.self, from: JSONSerialization.data(withJSONObject: map))
+    }
+}
diff --git a/just_audio/darwin/Classes/Errors/NotImplementedError.swift b/just_audio/darwin/Classes/Errors/NotImplementedError.swift
new file mode 100644
index 000000000..b3f3f7f10
--- /dev/null
+++ b/just_audio/darwin/Classes/Errors/NotImplementedError.swift
@@ -0,0 +1,14 @@
+//
+//  NotImplementedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class NotImplementedError: PluginError {
+    init(_ message: String) {
+        super.init(500, message)
+    }
+}
diff --git a/just_audio/darwin/Classes/Errors/NotInitializedError.swift b/just_audio/darwin/Classes/Errors/NotInitializedError.swift
new file mode 100644
index 000000000..6c8ffc06e
--- /dev/null
+++ b/just_audio/darwin/Classes/Errors/NotInitializedError.swift
@@ -0,0 +1,13 @@
+//
+//  NotInitializedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+class NotInitializedError: PluginError {
+    init(_ message: String) {
+        super.init(403, message)
+    }
+}
diff --git a/just_audio/darwin/Classes/Errors/NotSupportedError.swift b/just_audio/darwin/Classes/Errors/NotSupportedError.swift
new file mode 100644
index 000000000..17d5f6e9b
--- /dev/null
+++ b/just_audio/darwin/Classes/Errors/NotSupportedError.swift
@@ -0,0 +1,16 @@
+//
+//  NotSupportedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+class NotSupportedError: PluginError {
+    var value: Any
+
+    init(value: Any, _ message: String) {
+        self.value = value
+        super.init(400, "Not support \(value)\n\(message)")
+    }
+}
diff --git a/just_audio/darwin/Classes/Errors/PluginError.swift b/just_audio/darwin/Classes/Errors/PluginError.swift
new file mode 100644
index 000000000..59f3fc3f8
--- /dev/null
+++ b/just_audio/darwin/Classes/Errors/PluginError.swift
@@ -0,0 +1,18 @@
+//
+//  PluginErrors.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class PluginError: Error {
+    var code: Int
+    var message: String
+
+    init(_ code: Int, _ message: String) {
+        self.code = code
+        self.message = message
+    }
+}
diff --git a/just_audio/darwin/Classes/Extensions/AVAudioPlayerNode.swift b/just_audio/darwin/Classes/Extensions/AVAudioPlayerNode.swift
new file mode 100644
index 000000000..84c819550
--- /dev/null
+++ b/just_audio/darwin/Classes/Extensions/AVAudioPlayerNode.swift
@@ -0,0 +1,19 @@
+//
+//  AVAudioPlayerNode.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+extension AVAudioPlayerNode {
+    var currentTime: CMTime {
+        if let nodeTime: AVAudioTime = lastRenderTime, let playerTime: AVAudioTime = playerTime(forNodeTime: nodeTime) {
+            let currentTime = Double(playerTime.sampleTime) / playerTime.sampleRate
+            let milliSeconds = Int64(currentTime * 1000)
+            return milliSeconds < 0 ? CMTime.zero : CMTime(value: milliSeconds, timescale: 1000)
+        }
+        return CMTime.zero
+    }
+}
diff --git a/just_audio/darwin/Classes/Extensions/CMTime.swift b/just_audio/darwin/Classes/Extensions/CMTime.swift
new file mode 100644
index 000000000..28ad9f5f1
--- /dev/null
+++ b/just_audio/darwin/Classes/Extensions/CMTime.swift
@@ -0,0 +1,17 @@
+//
+//  CMTime.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+extension CMTime {
+    var milliseconds: Int64 {
+        return self == CMTime.invalid ? -1 : Int64(value * 1000 / Int64(timescale))
+    }
+
+    var microseconds: Int64 {
+        return self == CMTime.invalid ? -1 : Int64(value * 1_000_000 / Int64(timescale))
+    }
+}
diff --git a/just_audio/darwin/Classes/IndexedAudioSource.m b/just_audio/darwin/Classes/IndexedAudioSource.m
deleted file mode 100644
index 219d31043..000000000
--- a/just_audio/darwin/Classes/IndexedAudioSource.m
+++ /dev/null
@@ -1,106 +0,0 @@
-#import "IndexedAudioSource.h"
-#import "IndexedPlayerItem.h"
-#import <AVFoundation/AVFoundation.h>
-
-@implementation IndexedAudioSource {
-    BOOL _isAttached;
-    CMTime _queuedSeekPos;
-    void (^_queuedSeekCompletionHandler)(BOOL);
-}
-
-- (instancetype)initWithId:(NSString *)sid {
-    self = [super initWithId:sid];
-    NSAssert(self, @"super init cannot be nil");
-    _isAttached = NO;
-    _queuedSeekPos = kCMTimeInvalid;
-    _queuedSeekCompletionHandler = nil;
-    return self;
-}
-
-- (void)onStatusChanged:(AVPlayerItemStatus)status {
-    if (status == AVPlayerItemStatusReadyToPlay) {
-        // This handles a pending seek during a load.
-        // TODO: Test seeking during a seek.
-        if (_queuedSeekCompletionHandler) {
-            [self seek:_queuedSeekPos completionHandler:_queuedSeekCompletionHandler];
-            _queuedSeekPos = kCMTimeInvalid;
-            _queuedSeekCompletionHandler = nil;
-        }
-    }
-}
-
-- (IndexedPlayerItem *)playerItem {
-    return nil;
-}
-
-- (IndexedPlayerItem *)playerItem2 {
-    return nil;
-}
-
-- (BOOL)isAttached {
-    return _isAttached;
-}
-
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex {
-    [sequence addObject:self];
-    return treeIndex + 1;
-}
-
-- (void)attach:(AVQueuePlayer *)player initialPos:(CMTime)initialPos {
-    _isAttached = YES;
-    if (CMTIME_IS_VALID(initialPos)) {
-        [self seek:initialPos];
-    }
-}
-
-- (void)play:(AVQueuePlayer *)player {
-}
-
-- (void)pause:(AVQueuePlayer *)player {
-}
-
-- (void)stop:(AVQueuePlayer *)player {
-}
-
-- (void)seek:(CMTime)position {
-    [self seek:position completionHandler:nil];
-}
-
-- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler {
-    if (completionHandler && (self.playerItem.status != AVPlayerItemStatusReadyToPlay)) {
-        _queuedSeekPos = position;
-        _queuedSeekCompletionHandler = completionHandler;
-    }
-}
-
-- (void)flip {
-}
-
-- (void)preparePlayerItem2 {
-}
-
-- (CMTime)duration {
-    return kCMTimeInvalid;
-}
-
-- (void)setDuration:(CMTime)duration {
-}
-
-- (CMTime)position {
-    return kCMTimeInvalid;
-}
-
-- (CMTime)bufferedPosition {
-    return kCMTimeInvalid;
-}
-
-- (void)applyPreferredForwardBufferDuration {
-}
-
-- (void)applyCanUseNetworkResourcesForLiveStreamingWhilePaused {
-}
-
-- (void)applyPreferredPeakBitRate {
-}
-
-@end
diff --git a/just_audio/darwin/Classes/IndexedAudioSource.swift b/just_audio/darwin/Classes/IndexedAudioSource.swift
new file mode 100644
index 000000000..d17044cc7
--- /dev/null
+++ b/just_audio/darwin/Classes/IndexedAudioSource.swift
@@ -0,0 +1,15 @@
+import AVFoundation
+
+class IndexedAudioSource: AudioSource {
+    func load(engine _: AVAudioEngine, playerNode _: AVAudioPlayerNode, speedControl _: AVAudioUnitVarispeed, position _: CMTime?, completionHandler _: @escaping () -> Void) throws {
+        throw NotImplementedError("Not implemented IndexedAudioSource.load")
+    }
+
+    func getDuration() -> CMTime {
+        return CMTime.invalid
+    }
+
+    override func buildSequence() -> [IndexedAudioSource] {
+        return [self]
+    }
+}
diff --git a/just_audio/darwin/Classes/IndexedPlayerItem.m b/just_audio/darwin/Classes/IndexedPlayerItem.m
deleted file mode 100644
index 7a0218617..000000000
--- a/just_audio/darwin/Classes/IndexedPlayerItem.m
+++ /dev/null
@@ -1,6 +0,0 @@
-#import "IndexedPlayerItem.h"
-#import "IndexedAudioSource.h"
-
-@implementation IndexedPlayerItem
-@synthesize audioSource;
-@end
diff --git a/just_audio/darwin/Classes/JustAudioPlayer.swift b/just_audio/darwin/Classes/JustAudioPlayer.swift
new file mode 100644
index 000000000..b076325ad
--- /dev/null
+++ b/just_audio/darwin/Classes/JustAudioPlayer.swift
@@ -0,0 +1,144 @@
+import AVFoundation
+
+public class JustAudioPlayer: NSObject {
+    let playerId: String
+    let audioEffects: [[String: Any]]
+
+    let methodChannel: FlutterMethodChannel
+    let eventChannel: BetterEventChannel
+    let dataChannel: BetterEventChannel
+
+    var player: Player!
+
+    init(registrar _: FlutterPluginRegistrar,
+         playerId: String,
+         loadConfiguration _: [String: Any],
+         audioEffects: [[String: Any]],
+         methodChannel: FlutterMethodChannel,
+         eventChannel: BetterEventChannel,
+         dataChannel: BetterEventChannel)
+    {
+        self.playerId = playerId
+        self.audioEffects = audioEffects
+
+        self.methodChannel = methodChannel
+        self.eventChannel = eventChannel
+        self.dataChannel = dataChannel
+
+        super.init()
+        methodChannel.setMethodCallHandler { call, result in
+            self.handleMethodCall(call: call, result: result)
+        }
+    }
+
+    func handleMethodCall(call: FlutterMethodCall, result: @escaping FlutterResult) {
+        do {
+            if player == nil {
+                player = Player(audioEffects: try! audioEffects.map(Util.effectFrom), onEvent: onPlaybackEvent)
+            }
+
+            let request = call.arguments as! [String: Any]
+            print("=========== \(call.method) \(request)")
+
+            switch call.method {
+            case "load":
+                let source = try AudioSource.fromJson(request["audioSource"] as! [String: Any])
+                let initialPosition = request["initialPosition"] != nil ? CMTime.invalid : CMTimeMake(value: request["initialPosition"] as! Int64, timescale: 1_000_000)
+                let initialIndex = request["initialIndex"] as? Int ?? 0
+
+                let duration = player.load(source: source, initialPosition: initialPosition, initialIndex: initialIndex)
+                result(["duration": duration.microseconds])
+            case "play":
+                player.play()
+                result([:])
+            case "pause":
+                player.pause()
+                result([:])
+            case "stop":
+                player.stop()
+                result([:])
+            case "setVolume":
+                player.setVolume(Float(request["volume"] as! Double))
+                result([:])
+            case "setPitch":
+                player.setPitch(Float(request["pitch"] as! Double))
+                result([:])
+            case "setSkipSilence":
+                // TODO: player.setSkipSilence(request["enabled"] as! Bool)
+                result(NotImplementedError(call.method))
+            case "setSpeed":
+                player.setSpeed(Float(request["speed"] as! Double))
+                result([:])
+            case "setLoopMode":
+                player.setLoopMode(mode: Util.loopModeFrom(request["loopMode"] as! Int))
+                result([:])
+            case "setShuffleMode":
+                // it can be random or normal
+                player.setShuffleMode(isEnalbed: Util.shuffleModeFrom(request["shuffleMode"] as! Int))
+                result([:])
+            case "setShuffleOrder":
+                // TODO: TEST
+                player.setShuffleOrder(data: request["audioSource"] as! [String: Any])
+                result([:])
+            case "setAutomaticallyWaitsToMinimizeStalling":
+                // android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setCanUseNetworkResourcesForLiveStreamingWhilePaused":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setPreferredPeakBitRate":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setClip":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "seek":
+                let position = Util.timeFrom(microseconds: request["position"] as! Int64)
+                let index = request["index"] as? Int
+
+                player.seek(index: index, position: position)
+                result([:])
+            case "concatenatingInsertAll":
+                result(NotImplementedError(call.method))
+            case "concatenatingRemoveRange":
+                result(NotImplementedError(call.method))
+            case "concatenatingMove":
+                result(NotImplementedError(call.method))
+            case "audioEffectSetEnabled":
+                try player.enableEffect(type: request["type"] as! String, enabled: request["enabled"] as! Bool)
+                result([:])
+            case "darwinEqualizerBandSetGain":
+                player.setEqualizerBandGain(bandIndex: request["bandIndex"] as! Int, gain: Float(request["gain"] as! Double))
+                result([:])
+            default:
+                result(FlutterMethodNotImplemented)
+            }
+        } catch let error as PluginError {
+            result(FlutterError(code: "\(error.code)", message: error.message, details: nil))
+        } catch {
+            print(error)
+            result(FlutterError(code: "500", message: error.localizedDescription, details: nil))
+        }
+    }
+
+    func onPlaybackEvent(event: PlaybackEvent) {
+        eventChannel.sendEvent([
+            "processingState": event.processingState.rawValue,
+            "updatePosition": event.updatePosition.microseconds,
+            "updateTime": event.updateTime,
+            "bufferedPosition": 0,
+            "icyMetadata": [:],
+            "duration": event.duration.microseconds,
+            "currentIndex": event.currentIndex,
+        ])
+    }
+
+    func dispose() {
+        player?.dispose()
+        player = nil
+
+        eventChannel.dispose()
+        dataChannel.dispose()
+        methodChannel.setMethodCallHandler(nil)
+    }
+}
diff --git a/just_audio/darwin/Classes/JustAudioPlugin.m b/just_audio/darwin/Classes/JustAudioPlugin.m
deleted file mode 100644
index f562d4a27..000000000
--- a/just_audio/darwin/Classes/JustAudioPlugin.m
+++ /dev/null
@@ -1,64 +0,0 @@
-#import "JustAudioPlugin.h"
-#import "AudioPlayer.h"
-#import <AVFoundation/AVFoundation.h>
-#include <TargetConditionals.h>
-
-@implementation JustAudioPlugin {
-    NSObject<FlutterPluginRegistrar>* _registrar;
-    NSMutableDictionary<NSString *, AudioPlayer *> *_players;
-}
-
-+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
-    FlutterMethodChannel* channel = [FlutterMethodChannel
-        methodChannelWithName:@"com.ryanheise.just_audio.methods"
-              binaryMessenger:[registrar messenger]];
-    JustAudioPlugin* instance = [[JustAudioPlugin alloc] initWithRegistrar:registrar];
-    [registrar addMethodCallDelegate:instance channel:channel];
-}
-
-- (instancetype)initWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
-    self = [super init];
-    NSAssert(self, @"super init cannot be nil");
-    _registrar = registrar;
-    _players = [[NSMutableDictionary alloc] init];
-    return self;
-}
-
-- (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
-    if ([@"init" isEqualToString:call.method]) {
-        NSDictionary *request = (NSDictionary *)call.arguments;
-        NSString *playerId = (NSString *)request[@"id"];
-        NSDictionary *loadConfiguration = (NSDictionary *)request[@"audioLoadConfiguration"];
-        if ([_players objectForKey:playerId] != nil) {
-            FlutterError *flutterError = [FlutterError errorWithCode:@"error" message:@"Platform player already exists" details:nil];
-            result(flutterError);
-        } else {
-            AudioPlayer* player = [[AudioPlayer alloc] initWithRegistrar:_registrar playerId:playerId loadConfiguration:loadConfiguration];
-            [_players setValue:player forKey:playerId];
-            result(nil);
-        }
-    } else if ([@"disposePlayer" isEqualToString:call.method]) {
-        NSDictionary *request = (NSDictionary *)call.arguments;
-        NSString *playerId = request[@"id"];
-        [_players[playerId] dispose];
-        [_players setValue:nil forKey:playerId];
-        result(@{});
-    } else if ([@"disposeAllPlayers" isEqualToString:call.method]) {
-        for (NSString *playerId in _players) {
-            [_players[playerId] dispose];
-        }
-        [_players removeAllObjects];
-        result(@{});
-    } else {
-        result(FlutterMethodNotImplemented);
-    }
-}
-
-- (void)dealloc {
-    for (NSString *playerId in _players) {
-        [_players[playerId] dispose];
-    }
-    [_players removeAllObjects];
-}
-
-@end
diff --git a/just_audio/darwin/Classes/LoadControl.m b/just_audio/darwin/Classes/LoadControl.m
deleted file mode 100644
index b2969cb5a..000000000
--- a/just_audio/darwin/Classes/LoadControl.m
+++ /dev/null
@@ -1,7 +0,0 @@
-#import "LoadControl.h"
-
-@implementation LoadControl
-@synthesize preferredForwardBufferDuration;
-@synthesize canUseNetworkResourcesForLiveStreamingWhilePaused;
-@synthesize preferredPeakBitRate;
-@end
diff --git a/just_audio/darwin/Classes/LoopMode.swift b/just_audio/darwin/Classes/LoopMode.swift
new file mode 100644
index 000000000..f03373e1f
--- /dev/null
+++ b/just_audio/darwin/Classes/LoopMode.swift
@@ -0,0 +1,12 @@
+//
+//  LoopMode.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum LoopMode: Int {
+    case loopOff, loopOne, loopAll
+}
diff --git a/just_audio/darwin/Classes/LoopingAudioSource.m b/just_audio/darwin/Classes/LoopingAudioSource.m
deleted file mode 100644
index a8bae2ede..000000000
--- a/just_audio/darwin/Classes/LoopingAudioSource.m
+++ /dev/null
@@ -1,53 +0,0 @@
-#import "AudioSource.h"
-#import "LoopingAudioSource.h"
-#import <AVFoundation/AVFoundation.h>
-
-@implementation LoopingAudioSource {
-    // An array of duplicates
-    NSArray<AudioSource *> *_audioSources; // <AudioSource *>
-}
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSArray<AudioSource *> *)audioSources {
-    self = [super initWithId:sid];
-    NSAssert(self, @"super init cannot be nil");
-    _audioSources = audioSources;
-    return self;
-}
-
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex {
-    for (int i = 0; i < [_audioSources count]; i++) {
-        treeIndex = [_audioSources[i] buildSequence:sequence treeIndex:treeIndex];
-    }
-    return treeIndex;
-}
-
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches {
-    [super findById:sourceId matches:matches];
-    for (int i = 0; i < [_audioSources count]; i++) {
-        [_audioSources[i] findById:sourceId matches:matches];
-    }
-}
-
-- (NSArray<NSNumber *> *)getShuffleIndices {
-    NSMutableArray<NSNumber *> *order = [NSMutableArray new];
-    int offset = (int)[order count];
-    for (int i = 0; i < [_audioSources count]; i++) {
-        AudioSource *audioSource = _audioSources[i];
-        NSArray<NSNumber *> *childShuffleOrder = [audioSource getShuffleIndices];
-        for (int j = 0; j < [childShuffleOrder count]; j++) {
-            [order addObject:@([childShuffleOrder[j] integerValue] + offset)];
-        }
-        offset += [childShuffleOrder count];
-    }
-    return order;
-}
-
-- (void)decodeShuffleOrder:(NSDictionary *)dict {
-    NSDictionary *dictChild = (NSDictionary *)dict[@"child"];
-    for (int i = 0; i < [_audioSources count]; i++) {
-        AudioSource *child = _audioSources[i];
-        [child decodeShuffleOrder:dictChild];
-    }
-}
-
-@end
diff --git a/just_audio/darwin/Classes/ParamsEqualizerData.swift b/just_audio/darwin/Classes/ParamsEqualizerData.swift
new file mode 100644
index 000000000..c077049b7
--- /dev/null
+++ b/just_audio/darwin/Classes/ParamsEqualizerData.swift
@@ -0,0 +1,12 @@
+//
+//  ParamsEqualizerData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct ParamsEqualizerData: Codable {
+    let bands: [BandEqualizerData]
+}
diff --git a/just_audio/darwin/Classes/PlaybackEvent.swift b/just_audio/darwin/Classes/PlaybackEvent.swift
new file mode 100644
index 000000000..d0fb7d266
--- /dev/null
+++ b/just_audio/darwin/Classes/PlaybackEvent.swift
@@ -0,0 +1,16 @@
+//
+//  PlaybackEvent.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct PlaybackEvent {
+    let processingState: ProcessingState
+    let updatePosition: CMTime
+    let updateTime: Int64
+    let duration: CMTime
+    let currentIndex: Int
+}
diff --git a/just_audio/darwin/Classes/Player.swift b/just_audio/darwin/Classes/Player.swift
new file mode 100644
index 000000000..9f0430460
--- /dev/null
+++ b/just_audio/darwin/Classes/Player.swift
@@ -0,0 +1,385 @@
+//
+//  Player.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class Player {
+    let onEvent: (PlaybackEvent) -> Void
+    let audioEffects: [EffectData]
+
+    var engine: AVAudioEngine!
+    var playerNode: AVAudioPlayerNode!
+    var speedControl: AVAudioUnitVarispeed!
+    var pitchControl: AVAudioUnitTimePitch!
+    var audioUnitEQ: AVAudioUnitEQ?
+
+    // State properties
+    var processingState: ProcessingState = .none
+    var shuffleModeEnabled = false
+    var loopMode: LoopMode = .loopOff
+
+    // Queue properties
+    var indexedAudioSources: [IndexedAudioSource] = []
+    var currentSource: IndexedAudioSource?
+    var order: [Int] = []
+    var reverseOrder: [Int] = []
+
+    // Current Source
+    var index: Int = 0
+    var audioSource: AudioSource!
+    var duration: CMTime {
+        if processingState == .none || processingState == .loading {
+            return CMTime.invalid
+        } else if indexedAudioSources.count > 0 {
+            return currentSource!.getDuration()
+        } else {
+            return CMTime.zero
+        }
+    }
+
+    // Positions properties
+    var positionUpdatedAt: Int64 = 0
+    var positionUpdate: CMTime = .zero
+    var positionOffset: CMTime = .zero
+    var currentPosition: CMTime { return positionUpdate + positionOffset }
+
+    // Extra properties
+    var volume: Float = 1
+    var pitch: Float = 1
+    var rate: Float = 1
+
+    init(audioEffects: [EffectData], onEvent: @escaping (PlaybackEvent) -> Void) {
+        self.audioEffects = audioEffects
+        self.onEvent = onEvent
+    }
+
+    func load(source: AudioSource, initialPosition _: CMTime, initialIndex: Int) -> CMTime {
+        if playerNode != nil {
+            playerNode.pause()
+        }
+
+        index = initialIndex
+        processingState = .loading
+        updatePosition(CMTime.zero)
+        // Decode audio source
+        audioSource = source
+
+        indexedAudioSources = audioSource.buildSequence()
+
+        updateOrder()
+
+        if indexedAudioSources.isEmpty {
+            processingState = .none
+            broadcastPlaybackEvent()
+
+            return CMTime.zero
+        }
+
+        if engine == nil {
+            engine = AVAudioEngine()
+            playerNode = AVAudioPlayerNode()
+            speedControl = AVAudioUnitVarispeed()
+            pitchControl = AVAudioUnitTimePitch()
+
+            try! createAudioEffects()
+
+            playerNode.volume = volume
+            speedControl.rate = rate
+            pitchControl.pitch = pitch
+
+            var nodes = [playerNode, speedControl, pitchControl]
+
+            // add equalizer node
+            if audioUnitEQ != nil {
+                nodes.append(audioUnitEQ!)
+            }
+
+            // attach all nodes to engine
+            for node in nodes {
+                engine.attach(node!)
+            }
+
+            // add mainMixerNode
+            nodes.append(engine.mainMixerNode)
+
+            for i in 1 ..< nodes.count {
+                engine.connect(nodes[i - 1]!, to: nodes[i]!, format: nil)
+            }
+
+            // Observe for changes in the audio engine configuration
+            NotificationCenter.default.addObserver(self,
+                                                   selector: #selector(_handleInterruption),
+                                                   name: NSNotification.Name.AVAudioEngineConfigurationChange,
+                                                   object: nil)
+        }
+
+        try! setQueueFrom(index)
+
+        loadCurrentSource()
+
+        if !engine.isRunning {
+            try! engine.start()
+        }
+
+        processingState = .ready
+        broadcastPlaybackEvent()
+
+        return duration
+    }
+
+    @objc func _handleInterruption(notification _: Notification) {
+        resume()
+    }
+
+    func play() {
+        playPlayerNode()
+        updatePosition(nil)
+        broadcastPlaybackEvent()
+    }
+
+    func pause() {
+        updatePosition(nil)
+        playerNode.pause()
+        broadcastPlaybackEvent()
+    }
+
+    func stop() {
+        stopPlayerNode()
+        updatePosition(nil)
+        broadcastPlaybackEvent()
+    }
+
+    func resume() {
+        let wasPlaying = playerNode.isPlaying
+
+        playerNode.pause()
+        if !engine.isRunning {
+            try! engine.start()
+        }
+
+        if wasPlaying {
+            playerNode.play()
+        }
+    }
+
+    func seek(index: Int?, position: CMTime) {
+        let wasPlaying = playerNode.isPlaying
+
+        if let index = index {
+            try! setQueueFrom(index)
+        }
+
+        stopPlayerNode()
+
+        updatePosition(position)
+
+        processingState = .ready
+
+        loadCurrentSource()
+
+        // Restart play if player was playing
+        if wasPlaying {
+            playPlayerNode()
+        }
+
+        broadcastPlaybackEvent()
+    }
+
+    func updatePosition(_ positionUpdate: CMTime?) {
+        positionUpdatedAt = Int64(Date().timeIntervalSince1970 * 1000)
+        if let positionUpdate = positionUpdate { self.positionUpdate = positionUpdate }
+        positionOffset = indexedAudioSources.count > 0 && positionUpdate == nil ? playerNode.currentTime : CMTime.zero
+    }
+
+    private var isStopping = false
+    // Permit to check if [load(completionHandler)] is called when you force a stop
+    private func stopPlayerNode() {
+        isStopping = true
+        playerNode.stop()
+        isStopping = false
+    }
+
+    private func playPlayerNode() {
+        if !engine.isRunning {
+            try! engine.start()
+        }
+        playerNode.play()
+    }
+
+    private func loadCurrentSource() {
+        try! currentSource!.load(engine: engine, playerNode: playerNode, speedControl: speedControl, position: positionUpdate, completionHandler: {
+            if self.isStopping { return }
+            DispatchQueue.main.async {
+                self.playNext()
+            }
+        })
+    }
+
+    private func getRelativeIndex(_ offset: Int) -> Int {
+        switch loopMode {
+        case .loopOne:
+            return index
+        case .loopAll:
+            return offset >= indexedAudioSources.count ? 0 : reverseOrder[offset]
+        case .loopOff:
+            return reverseOrder[offset]
+        }
+    }
+
+    private func playNext() {
+        let newIndex = index + 1
+        if newIndex >= indexedAudioSources.count {
+            complete()
+        } else {
+            seek(index: getRelativeIndex(newIndex), position: CMTime.zero)
+            play()
+        }
+    }
+
+    private func complete() {
+        updatePosition(nil)
+        processingState = .completed
+        if playerNode != nil {
+            playerNode.stop()
+        }
+        broadcastPlaybackEvent()
+    }
+
+    // MARK: QUEUE
+
+    fileprivate func setQueueFrom(_ index: Int) throws {
+        guard !indexedAudioSources.isEmpty else {
+            preconditionFailure("no songs on library")
+        }
+        self.index = index
+        currentSource = indexedAudioSources[index]
+    }
+
+    // MARK: MODES
+
+    func setShuffleMode(isEnalbed: Bool) {
+        shuffleModeEnabled = isEnalbed
+        updateOrder()
+        broadcastPlaybackEvent()
+    }
+
+    func setShuffleOrder(data: [String: Any]) {
+        audioSource = try! .fromJson(data)
+        switch data["type"] as! String {
+        case "concatenating":
+            let children = (data["children"] as! [[String: Any]])
+            for child in children {
+                setShuffleOrder(data: child)
+            }
+        case "looping":
+            setShuffleOrder(data: data["child"] as! [String: Any])
+        default:
+            break
+        }
+    }
+
+    func setLoopMode(mode: LoopMode) {
+        loopMode = mode
+        broadcastPlaybackEvent()
+    }
+
+    fileprivate func updateOrder() {
+        reverseOrder = Array(repeating: 0, count: indexedAudioSources.count)
+        if shuffleModeEnabled {
+            order = audioSource.getShuffleIndices()
+        } else {
+            order = indexedAudioSources.enumerated().map { index, _ in
+                index
+            }
+        }
+        for i in 0 ..< indexedAudioSources.count {
+            reverseOrder[order[i]] = i
+        }
+    }
+
+    // MARK: EFFECTS
+
+    fileprivate func createAudioEffects() throws {
+        for effect in audioEffects {
+            if let effect = effect as? EqualizerEffectData {
+                audioUnitEQ = AVAudioUnitEQ(numberOfBands: effect.parameters.bands.count)
+
+                for (i, band) in effect.parameters.bands.enumerated() {
+                    audioUnitEQ!.bands[i].filterType = .parametric
+                    audioUnitEQ!.bands[i].frequency = band.centerFrequency
+                    audioUnitEQ!.bands[i].bandwidth = 1 // half an octave
+                    audioUnitEQ!.bands[i].gain = Util.gainFrom(band.gain)
+                    audioUnitEQ!.bands[i].bypass = false
+                }
+
+                audioUnitEQ!.bypass = !effect.enabled
+            } else {
+                throw NotSupportedError(value: effect.type, "When initialize effect")
+            }
+        }
+    }
+
+    func enableEffect(type: String, enabled: Bool) throws {
+        switch type {
+        case "DarwinEqualizer":
+            audioUnitEQ!.bypass = !enabled
+        default:
+            throw NotInitializedError("Not initialized effect \(type)")
+        }
+    }
+
+    func setEqualizerBandGain(bandIndex: Int, gain: Float) {
+        audioUnitEQ?.bands[bandIndex].gain = gain
+    }
+
+    // MARK: EXTRA
+
+    func setVolume(_ value: Float) {
+        volume = value
+        if playerNode != nil {
+            playerNode.volume = volume
+        }
+        broadcastPlaybackEvent()
+    }
+
+    func setPitch(_ value: Float) {
+        pitch = value
+        if pitchControl != nil {
+            pitchControl.pitch = pitch
+        }
+        broadcastPlaybackEvent()
+    }
+
+    func setSpeed(_ value: Float) {
+        rate = value
+        if speedControl != nil {
+            speedControl.rate = rate
+        }
+        updatePosition(nil)
+    }
+
+    fileprivate func broadcastPlaybackEvent() {
+        onEvent(PlaybackEvent(
+            processingState: processingState,
+            updatePosition: currentPosition,
+            updateTime: positionUpdatedAt,
+            duration: duration,
+            currentIndex: index
+        ))
+    }
+
+    func dispose() {
+        if processingState != .none {
+            playerNode?.pause()
+            processingState = .none
+        }
+        audioSource = nil
+        indexedAudioSources = []
+        playerNode?.stop()
+        engine?.stop()
+    }
+}
diff --git a/just_audio/darwin/Classes/ProcessingState.swift b/just_audio/darwin/Classes/ProcessingState.swift
new file mode 100644
index 000000000..3b082bb77
--- /dev/null
+++ b/just_audio/darwin/Classes/ProcessingState.swift
@@ -0,0 +1,12 @@
+//
+//  ProcessingState.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum ProcessingState: Int, Codable {
+    case none, loading, buffering, ready, completed
+}
diff --git a/just_audio/darwin/Classes/UriAudioSource.m b/just_audio/darwin/Classes/UriAudioSource.m
deleted file mode 100644
index baccf6c41..000000000
--- a/just_audio/darwin/Classes/UriAudioSource.m
+++ /dev/null
@@ -1,175 +0,0 @@
-#import "UriAudioSource.h"
-#import "IndexedAudioSource.h"
-#import "IndexedPlayerItem.h"
-#import "LoadControl.h"
-#import <AVFoundation/AVFoundation.h>
-
-@implementation UriAudioSource {
-    NSString *_uri;
-    IndexedPlayerItem *_playerItem;
-    IndexedPlayerItem *_playerItem2;
-    /* CMTime _duration; */
-    LoadControl *_loadControl;
-}
-
-- (instancetype)initWithId:(NSString *)sid uri:(NSString *)uri loadControl:(LoadControl *)loadControl {
-    self = [super initWithId:sid];
-    NSAssert(self, @"super init cannot be nil");
-    _uri = uri;
-    _loadControl = loadControl;
-    _playerItem = [self createPlayerItem:uri];
-    _playerItem2 = nil;
-    return self;
-}
-
-- (NSString *)uri {
-    return _uri;
-}
-
-- (IndexedPlayerItem *)createPlayerItem:(NSString *)uri {
-    IndexedPlayerItem *item;
-    if ([uri hasPrefix:@"file://"]) {
-        item = [[IndexedPlayerItem alloc] initWithURL:[NSURL fileURLWithPath:[[uri stringByRemovingPercentEncoding] substringFromIndex:7]]];
-    } else {
-        item = [[IndexedPlayerItem alloc] initWithURL:[NSURL URLWithString:uri]];
-    }
-    if (@available(macOS 10.13, iOS 11.0, *)) {
-        // This does the best at reducing distortion on voice with speeds below 1.0
-        item.audioTimePitchAlgorithm = AVAudioTimePitchAlgorithmTimeDomain;
-    }
-    if (@available(macOS 10.12, iOS 10.0, *)) {
-        if (_loadControl.preferredForwardBufferDuration != (id)[NSNull null]) {
-            item.preferredForwardBufferDuration = (double)([_loadControl.preferredForwardBufferDuration longLongValue]/1000) / 1000.0;
-        }
-    }
-    if (@available(iOS 9.0, macOS 10.11, *)) {
-        item.canUseNetworkResourcesForLiveStreamingWhilePaused = _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused;
-    }
-    if (@available(iOS 8.0, macOS 10.10, *)) {
-        if (_loadControl.preferredPeakBitRate != (id)[NSNull null]) {
-            item.preferredPeakBitRate = [_loadControl.preferredPeakBitRate doubleValue];
-        }
-    }
-
-    return item;
-}
-
-// Not used. XXX: Remove?
-- (void)applyPreferredForwardBufferDuration {
-    if (@available(macOS 10.12, iOS 10.0, *)) {
-        if (_loadControl.preferredForwardBufferDuration != (id)[NSNull null]) {
-            double value = (double)([_loadControl.preferredForwardBufferDuration longLongValue]/1000) / 1000.0;
-            _playerItem.preferredForwardBufferDuration = value;
-            if (_playerItem2) {
-                _playerItem2.preferredForwardBufferDuration = value;
-            }
-        }
-    }
-}
-
-- (void)applyCanUseNetworkResourcesForLiveStreamingWhilePaused {
-    if (@available(iOS 9.0, macOS 10.11, *)) {
-        _playerItem.canUseNetworkResourcesForLiveStreamingWhilePaused = _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused;
-        if (_playerItem2) {
-            _playerItem2.canUseNetworkResourcesForLiveStreamingWhilePaused = _loadControl.canUseNetworkResourcesForLiveStreamingWhilePaused;
-        }
-    }
-}
-
-- (void)applyPreferredPeakBitRate {
-    if (@available(iOS 8.0, macOS 10.10, *)) {
-        if (_loadControl.preferredPeakBitRate != (id)[NSNull null]) {
-            double value = [_loadControl.preferredPeakBitRate doubleValue];
-            _playerItem.preferredPeakBitRate = value;
-            if (_playerItem2) {
-                _playerItem2.preferredPeakBitRate = value;
-            }
-        }
-    }
-}
-
-- (IndexedPlayerItem *)playerItem {
-    return _playerItem;
-}
-
-- (IndexedPlayerItem *)playerItem2 {
-    return _playerItem2;
-}
-
-- (NSArray<NSNumber *> *)getShuffleIndices {
-    return @[@(0)];
-}
-
-- (void)play:(AVQueuePlayer *)player {
-}
-
-- (void)pause:(AVQueuePlayer *)player {
-}
-
-- (void)stop:(AVQueuePlayer *)player {
-}
-
-- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler {
-    if (!completionHandler || (_playerItem.status == AVPlayerItemStatusReadyToPlay)) {
-        NSValue *seekableRange = _playerItem.seekableTimeRanges.lastObject;
-        if (seekableRange) {
-            CMTimeRange range = [seekableRange CMTimeRangeValue];
-            position = CMTimeAdd(position, range.start);
-        }
-        [_playerItem seekToTime:position toleranceBefore:kCMTimeZero toleranceAfter:kCMTimeZero completionHandler:completionHandler];
-    } else {
-        [super seek:position completionHandler:completionHandler];
-    }
-}
-
-- (void)flip {
-    IndexedPlayerItem *temp = _playerItem;
-    _playerItem = _playerItem2;
-    _playerItem2 = temp;
-}
-
-- (void)preparePlayerItem2 {
-    if (!_playerItem2) {
-        _playerItem2 = [self createPlayerItem:_uri];
-        _playerItem2.audioSource = _playerItem.audioSource;
-    }
-}
-
-- (CMTime)duration {
-    NSValue *seekableRange = _playerItem.seekableTimeRanges.lastObject;
-    if (seekableRange) {
-        CMTimeRange seekableDuration = [seekableRange CMTimeRangeValue];
-        return seekableDuration.duration;
-    }
-    else {
-        return _playerItem.duration;
-    }
-    return kCMTimeInvalid;
-}
-
-- (void)setDuration:(CMTime)duration {
-}
-
-- (CMTime)position {
-    NSValue *seekableRange = _playerItem.seekableTimeRanges.lastObject;
-    if (seekableRange) {
-        CMTimeRange range = [seekableRange CMTimeRangeValue];
-        return CMTimeSubtract(_playerItem.currentTime, range.start);
-    } else {
-        return _playerItem.currentTime;
-    }
-    
-}
-
-- (CMTime)bufferedPosition {
-    NSValue *last = _playerItem.loadedTimeRanges.lastObject;
-    if (last) {
-        CMTimeRange timeRange = [last CMTimeRangeValue];
-        return CMTimeAdd(timeRange.start, timeRange.duration);
-    } else {
-        return _playerItem.currentTime;
-    }
-    return kCMTimeInvalid;
-}
-
-@end
diff --git a/just_audio/darwin/Classes/UriAudioSource.swift b/just_audio/darwin/Classes/UriAudioSource.swift
new file mode 100644
index 000000000..7ca387933
--- /dev/null
+++ b/just_audio/darwin/Classes/UriAudioSource.swift
@@ -0,0 +1,50 @@
+
+
+class UriAudioSource: IndexedAudioSource {
+    var url: URL
+    var duration: CMTime = .invalid
+
+    init(sid: String, uri: String) {
+        url = UriAudioSource.urlFrom(uri: uri)
+
+        super.init(sid: sid)
+    }
+
+    override func load(engine _: AVAudioEngine, playerNode: AVAudioPlayerNode, speedControl _: AVAudioUnitVarispeed, position: CMTime?, completionHandler: @escaping () -> Void) throws {
+        let audioFile = try! AVAudioFile(forReading: url)
+        let audioFormat = audioFile.fileFormat
+
+        duration = UriAudioSource.durationFrom(audioFile: audioFile)
+        let sampleRate = audioFormat.sampleRate
+
+        if let position = position, position.seconds > 0 {
+            let framePosition = AVAudioFramePosition(sampleRate * position.seconds)
+
+            let missingTime = duration.seconds - position.seconds
+            let framesToPlay = AVAudioFrameCount(sampleRate * missingTime)
+
+            if framesToPlay > 1000 {
+                playerNode.scheduleSegment(audioFile, startingFrame: framePosition, frameCount: framesToPlay, at: nil, completionHandler: completionHandler)
+            }
+        } else {
+            playerNode.scheduleFile(audioFile, at: nil, completionHandler: completionHandler)
+        }
+    }
+
+    override func getDuration() -> CMTime {
+        return duration
+    }
+
+    static func durationFrom(audioFile: AVAudioFile) -> CMTime {
+        let seconds = Double(audioFile.length) / audioFile.fileFormat.sampleRate
+        return CMTime(value: Int64(seconds * 1000), timescale: 1000)
+    }
+
+    static func urlFrom(uri: String) -> URL {
+        if uri.hasPrefix("ipod-library://") || uri.hasPrefix("file://") {
+            return URL(string: uri)!
+        } else {
+            return URL(fileURLWithPath: uri)
+        }
+    }
+}
diff --git a/just_audio/darwin/Classes/Util.swift b/just_audio/darwin/Classes/Util.swift
new file mode 100644
index 000000000..fc7573336
--- /dev/null
+++ b/just_audio/darwin/Classes/Util.swift
@@ -0,0 +1,44 @@
+//
+//  Util.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct Util {
+    static func timeFrom(microseconds: Int64) -> CMTime {
+        return CMTimeMake(value: microseconds, timescale: 1_000_000)
+    }
+
+    static func loopModeFrom(_ value: Int) -> LoopMode {
+        switch value {
+        case 1:
+            return LoopMode.loopOne
+        case 2:
+            return LoopMode.loopAll
+        default:
+            return LoopMode.loopOff
+        }
+    }
+
+    static func shuffleModeFrom(_ value: Int) -> Bool {
+        return value == 1
+    }
+
+    static func gainFrom(_ value: Float) -> Float {
+        // Equalize the level between iOS and android
+        return value * 2.8
+    }
+
+    static func effectFrom(_ map: [String: Any]) throws -> EffectData {
+        let type = map["type"] as! String
+        switch type {
+        case EffectType.darwinEqualizer.rawValue:
+            return EqualizerEffectData.fromJson(map)
+        default:
+            throw NotSupportedError(value: type, "When decoding effect")
+        }
+    }
+}
diff --git a/just_audio/example/.metadata b/just_audio/example/.metadata
index fea404f40..f072f9f62 100644
--- a/just_audio/example/.metadata
+++ b/just_audio/example/.metadata
@@ -1,10 +1,30 @@
 # This file tracks properties of this Flutter project.
 # Used by Flutter tool to assess capabilities and perform upgrades etc.
 #
-# This file should be version controlled and should not be manually edited.
+# This file should be version controlled.
 
 version:
-  revision: 68587a0916366e9512a78df22c44163d041dd5f3
-  channel: stable
+  revision: 195fa0b7285c0163a06c223e1f812afa78783584
+  channel: master
 
 project_type: app
+
+# Tracks metadata for the flutter migrate command
+migration:
+  platforms:
+    - platform: root
+      create_revision: 195fa0b7285c0163a06c223e1f812afa78783584
+      base_revision: 195fa0b7285c0163a06c223e1f812afa78783584
+    - platform: macos
+      create_revision: 195fa0b7285c0163a06c223e1f812afa78783584
+      base_revision: 195fa0b7285c0163a06c223e1f812afa78783584
+
+  # User provided section
+
+  # List of Local paths (relative to this file) that should be
+  # ignored by the migrate tool.
+  #
+  # Files that are not part of the templates will be ignored by default.
+  unmanaged_files:
+    - 'lib/main.dart'
+    - 'ios/Runner.xcodeproj/project.pbxproj'
diff --git a/just_audio/example/android/app/build.gradle b/just_audio/example/android/app/build.gradle
index b59d20728..dab5161c5 100644
--- a/just_audio/example/android/app/build.gradle
+++ b/just_audio/example/android/app/build.gradle
@@ -34,7 +34,7 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.ryanheise.just_audio_example"
-        minSdkVersion 19
+        minSdkVersion 24
         targetSdkVersion 31
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
@@ -58,4 +58,5 @@ dependencies {
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test:runner:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
+    implementation 'com.android.support:multidex:1.0.3'
 }
diff --git a/just_audio/example/audio/assets_mp3_dua_lipa_dont_start_now.mp3 b/just_audio/example/audio/assets_mp3_dua_lipa_dont_start_now.mp3
new file mode 100644
index 000000000..a381f7fe1
Binary files /dev/null and b/just_audio/example/audio/assets_mp3_dua_lipa_dont_start_now.mp3 differ
diff --git a/just_audio/example/audio/metronome.mp3 b/just_audio/example/audio/metronome.mp3
new file mode 100644
index 000000000..0cf52f5d6
Binary files /dev/null and b/just_audio/example/audio/metronome.mp3 differ
diff --git a/just_audio/example/ios/Flutter/AppFrameworkInfo.plist b/just_audio/example/ios/Flutter/AppFrameworkInfo.plist
index f2872cf47..4f8d4d245 100644
--- a/just_audio/example/ios/Flutter/AppFrameworkInfo.plist
+++ b/just_audio/example/ios/Flutter/AppFrameworkInfo.plist
@@ -21,6 +21,6 @@
   <key>CFBundleVersion</key>
   <string>1.0</string>
   <key>MinimumOSVersion</key>
-  <string>9.0</string>
+  <string>11.0</string>
 </dict>
 </plist>
diff --git a/just_audio/example/ios/Podfile b/just_audio/example/ios/Podfile
index f7d6a5e68..343e0c08c 100644
--- a/just_audio/example/ios/Podfile
+++ b/just_audio/example/ios/Podfile
@@ -1,5 +1,5 @@
 # Uncomment this line to define a global platform for your project
-# platform :ios, '9.0'
+platform :ios, '14.0'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'
diff --git a/just_audio/example/ios/Podfile.lock b/just_audio/example/ios/Podfile.lock
index fb474eff3..ca2383a5e 100644
--- a/just_audio/example/ios/Podfile.lock
+++ b/just_audio/example/ios/Podfile.lock
@@ -25,10 +25,10 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   audio_session: 4f3e461722055d21515cf3261b64c973c062f345
-  Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
-  just_audio: baa7252489dbcf47a4c7cc9ca663e9661c99aafa
-  path_provider_ios: 7d7ce634493af4477d156294792024ec3485acd5
+  Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
+  just_audio: 63f408b91c50261af3f71570c38b6dc14f28c015
+  path_provider_ios: 14f3d2fd28c4fdb42f44e0f751d12861c43cee02
 
-PODFILE CHECKSUM: 8e679eca47255a8ca8067c4c67aab20e64cb974d
+PODFILE CHECKSUM: ecb0237623a0fbc6315c830308d57def28ec2055
 
 COCOAPODS: 1.11.3
diff --git a/just_audio/example/ios/Runner.xcodeproj/project.pbxproj b/just_audio/example/ios/Runner.xcodeproj/project.pbxproj
index eb0986be7..dcb708004 100644
--- a/just_audio/example/ios/Runner.xcodeproj/project.pbxproj
+++ b/just_audio/example/ios/Runner.xcodeproj/project.pbxproj
@@ -3,19 +3,18 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 50;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
-		9740EEB41CF90195004384FC /* Debug.xcconfig in Resources */ = {isa = PBXBuildFile; fileRef = 9740EEB21CF90195004384FC /* Debug.xcconfig */; };
+		5D4165950F38A15DC03291F0 /* libPods-Runner.a in Frameworks */ = {isa = PBXBuildFile; fileRef = 8EF2DFDC6775310FC6225957 /* libPods-Runner.a */; };
 		978B8F6F1D3862AE00F588F7 /* AppDelegate.m in Sources */ = {isa = PBXBuildFile; fileRef = 7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */; };
 		97C146F31CF9000F007C117D /* main.m in Sources */ = {isa = PBXBuildFile; fileRef = 97C146F21CF9000F007C117D /* main.m */; };
 		97C146FC1CF9000F007C117D /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FA1CF9000F007C117D /* Main.storyboard */; };
 		97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FD1CF9000F007C117D /* Assets.xcassets */; };
 		97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 97C146FF1CF9000F007C117D /* LaunchScreen.storyboard */; };
-		D06FA586B72D3A4E8145F7B3 /* libPods-Runner.a in Frameworks */ = {isa = PBXBuildFile; fileRef = C5F18129E1310C9DA1B65F44 /* libPods-Runner.a */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXCopyFilesBuildPhase section */
@@ -34,12 +33,13 @@
 /* Begin PBXFileReference section */
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
-		2920064AACAD73E894573C6E /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		34687D4A498A71234061813D /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; name = Release.xcconfig; path = Flutter/Release.xcconfig; sourceTree = "<group>"; };
 		7AFFD8ED1D35381100E5BB4D /* AppDelegate.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AppDelegate.h; sourceTree = "<group>"; };
 		7AFFD8EE1D35381100E5BB4D /* AppDelegate.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AppDelegate.m; sourceTree = "<group>"; };
-		936C8FBACDB1725D477088CC /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
+		803B45951FE38FF19F8DDB2F /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
+		8EF2DFDC6775310FC6225957 /* libPods-Runner.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Runner.a"; sourceTree = BUILT_PRODUCTS_DIR; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Debug.xcconfig; path = Flutter/Debug.xcconfig; sourceTree = "<group>"; };
 		9740EEB31CF90195004384FC /* Generated.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; name = Generated.xcconfig; path = Flutter/Generated.xcconfig; sourceTree = "<group>"; };
 		97C146EE1CF9000F007C117D /* Runner.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Runner.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -48,8 +48,7 @@
 		97C146FD1CF9000F007C117D /* Assets.xcassets */ = {isa = PBXFileReference; lastKnownFileType = folder.assetcatalog; path = Assets.xcassets; sourceTree = "<group>"; };
 		97C147001CF9000F007C117D /* Base */ = {isa = PBXFileReference; lastKnownFileType = file.storyboard; name = Base; path = Base.lproj/LaunchScreen.storyboard; sourceTree = "<group>"; };
 		97C147021CF9000F007C117D /* Info.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
-		C5F18129E1310C9DA1B65F44 /* libPods-Runner.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = "libPods-Runner.a"; sourceTree = BUILT_PRODUCTS_DIR; };
-		EEEB488F061389F2C0725BDD /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
+		E1992085E55E3FA3B9D3015D /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -57,21 +56,13 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				D06FA586B72D3A4E8145F7B3 /* libPods-Runner.a in Frameworks */,
+				5D4165950F38A15DC03291F0 /* libPods-Runner.a in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
-		1E7998A536E2BAD21DDFF12E /* Frameworks */ = {
-			isa = PBXGroup;
-			children = (
-				C5F18129E1310C9DA1B65F44 /* libPods-Runner.a */,
-			);
-			name = Frameworks;
-			sourceTree = "<group>";
-		};
 		9740EEB11CF90186004384FC /* Flutter */ = {
 			isa = PBXGroup;
 			children = (
@@ -90,7 +81,7 @@
 				97C146F01CF9000F007C117D /* Runner */,
 				97C146EF1CF9000F007C117D /* Products */,
 				A27F1C3EF07264C52FFA0B86 /* Pods */,
-				1E7998A536E2BAD21DDFF12E /* Frameworks */,
+				9D8A3EE4043A027205EFD64B /* Frameworks */,
 			);
 			sourceTree = "<group>";
 		};
@@ -126,12 +117,20 @@
 			name = "Supporting Files";
 			sourceTree = "<group>";
 		};
+		9D8A3EE4043A027205EFD64B /* Frameworks */ = {
+			isa = PBXGroup;
+			children = (
+				8EF2DFDC6775310FC6225957 /* libPods-Runner.a */,
+			);
+			name = Frameworks;
+			sourceTree = "<group>";
+		};
 		A27F1C3EF07264C52FFA0B86 /* Pods */ = {
 			isa = PBXGroup;
 			children = (
-				EEEB488F061389F2C0725BDD /* Pods-Runner.debug.xcconfig */,
-				2920064AACAD73E894573C6E /* Pods-Runner.release.xcconfig */,
-				936C8FBACDB1725D477088CC /* Pods-Runner.profile.xcconfig */,
+				34687D4A498A71234061813D /* Pods-Runner.debug.xcconfig */,
+				E1992085E55E3FA3B9D3015D /* Pods-Runner.release.xcconfig */,
+				803B45951FE38FF19F8DDB2F /* Pods-Runner.profile.xcconfig */,
 			);
 			path = Pods;
 			sourceTree = "<group>";
@@ -143,7 +142,7 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 97C147051CF9000F007C117D /* Build configuration list for PBXNativeTarget "Runner" */;
 			buildPhases = (
-				3D5B4DF09BB47DFA6E4B8495 /* [CP] Check Pods Manifest.lock */,
+				A04A6DDA6DA5286F76B339BE /* [CP] Check Pods Manifest.lock */,
 				9740EEB61CF901F6004384FC /* Run Script */,
 				97C146EA1CF9000F007C117D /* Sources */,
 				97C146EB1CF9000F007C117D /* Frameworks */,
@@ -171,6 +170,8 @@
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
 						CreatedOnToolsVersion = 7.3.1;
+						DevelopmentTeam = 666D2FP3SY;
+						ProvisioningStyle = Automatic;
 					};
 				};
 			};
@@ -199,7 +200,6 @@
 			files = (
 				97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */,
 				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
-				9740EEB41CF90195004384FC /* Debug.xcconfig in Resources */,
 				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
 				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
 			);
@@ -210,10 +210,12 @@
 /* Begin PBXShellScriptBuildPhase section */
 		3B06AD1E1E4923F5004D2608 /* Thin Binary */ = {
 			isa = PBXShellScriptBuildPhase;
+			alwaysOutOfDate = 1;
 			buildActionMask = 2147483647;
 			files = (
 			);
 			inputPaths = (
+				"${TARGET_BUILD_DIR}/${INFOPLIST_PATH}",
 			);
 			name = "Thin Binary";
 			outputPaths = (
@@ -222,41 +224,42 @@
 			shellPath = /bin/sh;
 			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" embed_and_thin";
 		};
-		3D5B4DF09BB47DFA6E4B8495 /* [CP] Check Pods Manifest.lock */ = {
+		9740EEB61CF901F6004384FC /* Run Script */ = {
 			isa = PBXShellScriptBuildPhase;
+			alwaysOutOfDate = 1;
 			buildActionMask = 2147483647;
 			files = (
 			);
-			inputFileListPaths = (
-			);
 			inputPaths = (
-				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
-				"${PODS_ROOT}/Manifest.lock",
-			);
-			name = "[CP] Check Pods Manifest.lock";
-			outputFileListPaths = (
 			);
+			name = "Run Script";
 			outputPaths = (
-				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
-			showEnvVarsInLog = 0;
+			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
 		};
-		9740EEB61CF901F6004384FC /* Run Script */ = {
+		A04A6DDA6DA5286F76B339BE /* [CP] Check Pods Manifest.lock */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
 			);
+			inputFileListPaths = (
+			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
+			);
+			name = "[CP] Check Pods Manifest.lock";
+			outputFileListPaths = (
 			);
-			name = "Run Script";
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "/bin/sh \"$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh\" build";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
 
@@ -316,6 +319,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -334,7 +338,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -346,16 +350,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 666D2FP3SY;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					/usr/lib/swift,
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
@@ -389,6 +399,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -413,7 +424,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
@@ -444,6 +455,7 @@
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
@@ -462,7 +474,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -474,22 +486,31 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 9740EEB21CF90195004384FC /* Debug.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 666D2FP3SY;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					/usr/lib/swift,
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = com.ryanheise.audioPlayerExample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				VERSIONING_SYSTEM = "apple-generic";
 			};
 			name = Debug;
@@ -498,16 +519,22 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 7AFA3C8E1D35360C0083082E /* Release.xcconfig */;
 			buildSettings = {
+				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
+				DEVELOPMENT_TEAM = 666D2FP3SY;
 				ENABLE_BITCODE = NO;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
 				);
 				INFOPLIST_FILE = Runner/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 14.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					/usr/lib/swift,
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
 				LIBRARY_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/Flutter",
diff --git a/just_audio/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/just_audio/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index 3db53b6e1..c87d15a33 100644
--- a/just_audio/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/just_audio/example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -27,8 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -38,8 +36,8 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
+      <Testables>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -61,8 +59,6 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Profile"
diff --git a/just_audio/example/ios/Runner/Base.lproj/Main.storyboard b/just_audio/example/ios/Runner/Base.lproj/Main.storyboard
index f3c28516f..5d0fa39f8 100644
--- a/just_audio/example/ios/Runner/Base.lproj/Main.storyboard
+++ b/just_audio/example/ios/Runner/Base.lproj/Main.storyboard
@@ -1,8 +1,10 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+<?xml version="1.0" encoding="UTF-8"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="21225" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+    <device id="retina6_0" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="21207"/>
+        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>
         <!--Flutter View Controller-->
@@ -14,13 +16,14 @@
                         <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
-                        <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                        <rect key="frame" x="0.0" y="0.0" width="390" height="844"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
-                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
+                        <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                     </view>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
             </objects>
+            <point key="canvasLocation" x="140" y="-2"/>
         </scene>
     </scenes>
 </document>
diff --git a/just_audio/example/ios/Runner/Info.plist b/just_audio/example/ios/Runner/Info.plist
index efb7579f5..26f4f3920 100644
--- a/just_audio/example/ios/Runner/Info.plist
+++ b/just_audio/example/ios/Runner/Info.plist
@@ -2,6 +2,12 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>NSLocalNetworkUsageDescription</key>
+	<string>Flutter need it for debug mode</string>
+	<key>NSBonjourServices</key>
+	<array>
+		<string>_dartobservatory._tcp</string>
+	</array>
 	<key>NSAppTransportSecurity</key>
 	<dict>
 		<key>NSAllowsArbitraryLoads</key>
@@ -48,5 +54,7 @@
 	<false/>
 	<key>CADisableMinimumFrameDurationOnPhone</key>
 	<true/>
+	<key>UIApplicationSupportsIndirectInputEvents</key>
+	<true/>
 </dict>
 </plist>
diff --git a/just_audio/example/lib/example_effects.dart b/just_audio/example/lib/example_effects.dart
index 8ce6ef6d8..6af606f43 100644
--- a/just_audio/example/lib/example_effects.dart
+++ b/just_audio/example/lib/example_effects.dart
@@ -23,17 +23,30 @@ class MyApp extends StatefulWidget {
 }
 
 class MyAppState extends State<MyApp> with WidgetsBindingObserver {
-  final _equalizer = AndroidEqualizer();
-  final _loudnessEnhancer = AndroidLoudnessEnhancer();
-  late final AudioPlayer _player = AudioPlayer(
-    audioPipeline: AudioPipeline(
-      androidAudioEffects: [
-        _loudnessEnhancer,
-        _equalizer,
+  final _equalizer = Equalizer(
+    darwinMessageParameters: DarwinEqualizerParametersMessage(
+      minDecibels: -26.0,
+      maxDecibels: 24.0,
+      bands: [
+        DarwinEqualizerBandMessage(index: 0, centerFrequency: 60, gain: 0),
+        DarwinEqualizerBandMessage(index: 1, centerFrequency: 230, gain: 0),
+        DarwinEqualizerBandMessage(index: 2, centerFrequency: 910, gain: 0),
+        DarwinEqualizerBandMessage(index: 3, centerFrequency: 3600, gain: 0),
+        DarwinEqualizerBandMessage(index: 4, centerFrequency: 14000, gain: 0),
       ],
     ),
   );
 
+  final _loudnessEnhancer = AndroidLoudnessEnhancer();
+  late final AudioPlayer _player = AudioPlayer(
+    audioPipeline: AudioPipeline(androidAudioEffects: [
+      _loudnessEnhancer,
+      _equalizer,
+    ], darwinAudioEffects: [
+      _equalizer
+    ]),
+  );
+
   @override
   void initState() {
     super.initState();
@@ -48,8 +61,8 @@ class MyAppState extends State<MyApp> with WidgetsBindingObserver {
     final session = await AudioSession.instance;
     await session.configure(const AudioSessionConfiguration.speech());
     try {
-      await _player.setAudioSource(AudioSource.uri(Uri.parse(
-          "https://s3.amazonaws.com/scifri-episodes/scifri20181123-episode.mp3")));
+      await _player.setAudioSource(
+          AudioSource.uri(Uri.parse("asset:///audio/nature.mp3")));
     } catch (e) {
       print("Error loading audio source: $e");
     }
@@ -165,7 +178,7 @@ class LoudnessEnhancerControls extends StatelessWidget {
 }
 
 class EqualizerControls extends StatelessWidget {
-  final AndroidEqualizer equalizer;
+  final Equalizer equalizer;
 
   const EqualizerControls({
     Key? key,
@@ -174,7 +187,7 @@ class EqualizerControls extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return FutureBuilder<AndroidEqualizerParameters>(
+    return FutureBuilder<EqualizerParameters>(
       future: equalizer.parameters,
       builder: (context, snapshot) {
         final parameters = snapshot.data;
diff --git a/just_audio/example/lib/example_playlist.dart b/just_audio/example/lib/example_playlist.dart
index 898fad637..0f4d2c12c 100644
--- a/just_audio/example/lib/example_playlist.dart
+++ b/just_audio/example/lib/example_playlist.dart
@@ -30,8 +30,8 @@ class MyAppState extends State<MyApp> with WidgetsBindingObserver {
         ![TargetPlatform.windows, TargetPlatform.linux]
             .contains(defaultTargetPlatform))
       ClippingAudioSource(
-        start: const Duration(seconds: 60),
-        end: const Duration(seconds: 90),
+        start: const Duration(seconds: 0),
+        end: const Duration(seconds: 30),
         child: AudioSource.uri(Uri.parse(
             "https://s3.amazonaws.com/scifri-episodes/scifri20181123-episode.mp3")),
         tag: AudioMetadata(
diff --git a/just_audio/example/lib/full/delay_controls.dart b/just_audio/example/lib/full/delay_controls.dart
new file mode 100644
index 000000000..23714a341
--- /dev/null
+++ b/just_audio/example/lib/full/delay_controls.dart
@@ -0,0 +1,95 @@
+import 'package:flutter/material.dart';
+import 'package:just_audio/just_audio.dart';
+
+class DelayControls extends StatelessWidget {
+  final DarwinDelay delay;
+
+  const DelayControls(this.delay, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text("Delay", style: Theme.of(context).textTheme.headline3),
+        const SizedBox(height: 10),
+        Row(
+          children: [
+            StreamBuilder<bool>(
+              stream: delay.enabledStream,
+              builder: (context, snap) => Switch(
+                value: snap.data ?? false,
+                onChanged: (change) async {
+                  await delay.setEnabled(change);
+                },
+              ),
+            ),
+            const SizedBox(width: 10),
+            const Text("Activate"),
+          ],
+        ),
+        const SizedBox(height: 16),
+        const Text("Delay Time"),
+        StreamBuilder<double>(
+          stream: delay.secondsDelayTimeStream,
+          builder: (context, snap) {
+            return Slider(
+              value: snap.data ?? delay.secondsDelayTime,
+              min: 0,
+              max: 2,
+              onChanged: (change) async {
+                await delay.setDelayTime(change);
+              },
+            );
+          },
+        ),
+        const SizedBox(height: 16),
+        const Text("Delay Low Pass Cutoff"),
+        StreamBuilder<double>(
+          stream: delay.lowPassCutoffHzStream,
+          builder: (context, snap) {
+            return Slider(
+              value: snap.data ?? delay.lowPassCutoffHz,
+              min: 10,
+              max: 15000 * 2,
+              divisions: 10,
+              onChanged: (change) async {
+                await delay.setLowPassCutoffHz(change);
+              },
+            );
+          },
+        ),
+        const SizedBox(height: 16),
+        const Text("Delay Feedback"),
+        StreamBuilder<double>(
+          stream: delay.feedbackPercentStream,
+          builder: (context, snap) {
+            return Slider(
+              value: snap.data ?? delay.feedbackPercent,
+              min: -100,
+              max: 100,
+              onChanged: (change) async {
+                await delay.setFeedbackPercent(change);
+              },
+            );
+          },
+        ),
+        const SizedBox(height: 16),
+        const Text("Distortion Wet Dry Mix"),
+        StreamBuilder<double>(
+          stream: delay.wetDryMixStream,
+          builder: (context, snap) {
+            return Slider(
+              min: 0,
+              max: 100,
+              value: snap.data ?? delay.wetDryMixPercent,
+              onChanged: (change) async {
+                await delay.setWetDryMixPercent(change);
+              },
+            );
+          },
+        ),
+      ],
+    );
+  }
+}
diff --git a/just_audio/example/lib/full/distortion_controls.dart b/just_audio/example/lib/full/distortion_controls.dart
new file mode 100644
index 000000000..27fbcf1e7
--- /dev/null
+++ b/just_audio/example/lib/full/distortion_controls.dart
@@ -0,0 +1,89 @@
+import 'package:flutter/material.dart';
+import 'package:just_audio/just_audio.dart';
+
+class DistortionControls extends StatelessWidget {
+  final DarwinDistortion distortion;
+
+  const DistortionControls(this.distortion, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text("Distortion", style: Theme.of(context).textTheme.headline3),
+        const SizedBox(height: 10),
+        Row(
+          children: [
+            StreamBuilder<bool>(
+              stream: distortion.enabledStream,
+              builder: (context, snap) => Switch(
+                value: snap.data ?? false,
+                onChanged: (change) async {
+                  await distortion.setEnabled(change);
+                },
+              ),
+            ),
+            const SizedBox(width: 10),
+            const Text("Activate"),
+          ],
+        ),
+        Row(
+          children: [
+            const SizedBox(width: 16),
+            StreamBuilder<DarwinDistortionPreset>(
+              stream: distortion.presetStream,
+              builder: (context, AsyncSnapshot<DarwinDistortionPreset> snap) {
+                return DropdownButton<DarwinDistortionPreset>(
+                  value: snap.data,
+                  items: DarwinDistortionPreset.values
+                      .map<DropdownMenuItem<DarwinDistortionPreset>>(
+                        (e) => DropdownMenuItem(value: e, child: Text(e.name)),
+                      )
+                      .toList(),
+                  onChanged: (DarwinDistortionPreset? change) async {
+                    if (change != null) {
+                      await distortion.setPreset(change);
+                    }
+                  },
+                );
+              },
+            ),
+            const SizedBox(width: 10),
+            const Text("Preset"),
+          ],
+        ),
+        const SizedBox(height: 16),
+        const Text("Distortion Gain"),
+        StreamBuilder<double>(
+          stream: distortion.preGainMixStream,
+          builder: (context, snap) {
+            return Slider(
+              value: snap.data ?? distortion.preGain,
+              min: 0,
+              max: 100,
+              onChanged: (change) async {
+                await distortion.setPreGain(change);
+              },
+            );
+          },
+        ),
+        const SizedBox(height: 16),
+        const Text("Distortion Wet Dry Mix"),
+        StreamBuilder<double>(
+          stream: distortion.wetDryMixStream,
+          builder: (context, snap) {
+            return Slider(
+              min: 0,
+              max: 100,
+              value: snap.data ?? distortion.wetDryMix,
+              onChanged: (change) async {
+                await distortion.setWetDryMix(change);
+              },
+            );
+          },
+        ),
+      ],
+    );
+  }
+}
diff --git a/just_audio/example/lib/full/equalizer_controls.dart b/just_audio/example/lib/full/equalizer_controls.dart
new file mode 100644
index 000000000..0e7e73c03
--- /dev/null
+++ b/just_audio/example/lib/full/equalizer_controls.dart
@@ -0,0 +1,38 @@
+import 'package:flutter/material.dart';
+import 'package:just_audio/just_audio.dart';
+import 'package:just_audio_example/example_effects.dart';
+
+class EqualizerControlsCard extends StatelessWidget {
+  final Equalizer equalizer;
+
+  const EqualizerControlsCard({required this.equalizer, Key? key})
+      : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      height: 500,
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text("Equalizer", style: Theme.of(context).textTheme.headline3),
+          const SizedBox(height: 10),
+          StreamBuilder<bool>(
+            stream: equalizer.enabledStream,
+            builder: (context, snapshot) {
+              final enabled = snapshot.data ?? false;
+              return SwitchListTile(
+                title: const Text('Equalizer'),
+                value: enabled,
+                onChanged: equalizer.setEnabled,
+              );
+            },
+          ),
+          Expanded(
+            child: EqualizerControls(equalizer: equalizer),
+          ),
+        ],
+      ),
+    );
+  }
+}
diff --git a/just_audio/example/lib/full/k_music.dart b/just_audio/example/lib/full/k_music.dart
new file mode 100644
index 000000000..dd64b84f9
--- /dev/null
+++ b/just_audio/example/lib/full/k_music.dart
@@ -0,0 +1,337 @@
+import 'package:audio_session/audio_session.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:just_audio/just_audio.dart';
+import 'package:just_audio_example/common.dart';
+import 'package:just_audio_example/full/delay_controls.dart';
+import 'package:just_audio_example/full/distortion_controls.dart';
+import 'package:just_audio_example/full/equalizer_controls.dart';
+import 'package:just_audio_example/full/reverb_controls.dart';
+import 'package:just_audio_example/full/write_to_file_controls.dart';
+import 'package:rxdart/rxdart.dart';
+
+void main() => runApp(const KMusicApp());
+
+/// An iOS-focused example of usage for
+/// effects
+/// mixer
+/// write to output file
+/// multiple tracks
+class KMusicApp extends StatefulWidget {
+  const KMusicApp({Key? key}) : super(key: key);
+
+  @override
+  KMusicState createState() => KMusicState();
+}
+
+class KMusicState extends State<KMusicApp> with WidgetsBindingObserver {
+  // Distortion
+  final distortion = DarwinDistortion(
+    enabled: false,
+    preset: DarwinDistortionPreset.drumsBitBrush,
+  );
+
+  // Reverb
+  final reverb = DarwinReverb(
+    preset: DarwinReverbPreset.largeHall2,
+    enabled: false,
+    wetDryMix: 0,
+  );
+
+  // Delay
+  final delay = DarwinDelay(
+    enabled: false,
+  );
+
+  final _equalizer = Equalizer(
+    darwinMessageParameters: DarwinEqualizerParametersMessage(
+      minDecibels: -26.0,
+      maxDecibels: 24.0,
+      bands: [
+        DarwinEqualizerBandMessage(index: 0, centerFrequency: 60, gain: 0),
+        DarwinEqualizerBandMessage(index: 1, centerFrequency: 230, gain: 0),
+        DarwinEqualizerBandMessage(index: 2, centerFrequency: 910, gain: 0),
+        DarwinEqualizerBandMessage(index: 3, centerFrequency: 3600, gain: 0),
+        DarwinEqualizerBandMessage(index: 4, centerFrequency: 14000, gain: 0),
+      ],
+    ),
+  );
+
+  late final _player = AudioPlayer(
+    audioPipeline: AudioPipeline(
+      darwinAudioEffects: [_equalizer],
+    ),
+  );
+
+  final _metronomePlayer = AudioPlayer();
+
+  @override
+  void initState() {
+    super.initState();
+    ambiguate(WidgetsBinding.instance)!.addObserver(this);
+    SystemChrome.setSystemUIOverlayStyle(const SystemUiOverlayStyle(
+      statusBarColor: Colors.black,
+    ));
+    _init();
+  }
+
+  Future<void> _init() async {
+    // Inform the operating system of our app's audio attributes etc.
+    // We pick a reasonable default for an app that plays speech.
+    final session = await AudioSession.instance;
+    await session.configure(const AudioSessionConfiguration.speech());
+    // Listen to errors during playback.
+    _player.playbackEventStream.listen((event) {
+      print(event.toString());
+    }, onError: (Object e, StackTrace stackTrace) {
+      print('A stream error occurred: $e');
+      print(stackTrace);
+    });
+    // Try to load audio from a source and catch any errors.
+    try {
+      await _player.setAudioSource(
+        ConcatenatingAudioSource(
+          children: [
+            AudioSource.uri(
+              Uri.parse(
+                "asset:///audio/assets_mp3_dua_lipa_dont_start_now.mp3",
+              ),
+              effects: [
+                distortion,
+                reverb,
+                delay,
+              ],
+            ),
+          ],
+        ),
+      );
+
+      final value = await rootBundle.loadBuffer("audio/metronome.mp3");
+
+      print(value.length);
+      await _metronomePlayer.setAudioSource(LoopingAudioSource(
+        child: AudioSource.uri(
+          Uri.parse("asset:///audio/metronome.mp3"),
+        ),
+        count: 300,
+      ));
+    } catch (e) {
+      print("Error loading audio source: $e");
+    }
+  }
+
+  @override
+  void dispose() {
+    ambiguate(WidgetsBinding.instance)!.removeObserver(this);
+    _player.dispose();
+    super.dispose();
+  }
+
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    if (state == AppLifecycleState.paused) {
+      _player.stop();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      debugShowCheckedModeBanner: false,
+      home: Scaffold(
+        body: SafeArea(
+          child: Padding(
+            padding: const EdgeInsets.all(8.0),
+            child: CustomScrollView(
+              slivers: [
+                SliverPersistentHeader(
+                  pinned: true,
+                  delegate: BasicPlayerInfoHeaderDelegate(
+                    player: _player,
+                  ),
+                ),
+                SliverList(
+                  delegate: SliverChildListDelegate(
+                    [
+                      PaddedCard(
+                        child: DistortionControls(distortion),
+                      ),
+                      const SizedBox(height: 20),
+                      PaddedCard(
+                        child: ReverbControls(reverb),
+                      ),
+                      const SizedBox(height: 20),
+                      PaddedCard(
+                        child: DelayControls(delay),
+                      ),
+                      const SizedBox(height: 20),
+                      PaddedCard(
+                        child: WriteToFileControls(player: _player),
+                      ),
+                      const SizedBox(height: 20),
+                      PaddedCard(
+                        child: EqualizerControlsCard(equalizer: _equalizer),
+                      ),
+                      PaddedCard(
+                        child: Column(
+                          children: [
+                            Text("Multiple tracks",
+                                style: Theme.of(context).textTheme.headline3),
+                            const SizedBox(height: 10),
+                            ControlButtons(_metronomePlayer)
+                          ],
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class PaddedCard extends StatelessWidget {
+  final Widget child;
+
+  const PaddedCard({required this.child, Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Card(
+      child: Padding(padding: const EdgeInsets.all(10), child: child),
+    );
+  }
+}
+
+class BasicPlayerInfoHeaderDelegate extends SliverPersistentHeaderDelegate {
+  final double height;
+  final AudioPlayer player;
+
+  BasicPlayerInfoHeaderDelegate({
+    required this.player,
+    this.height = 150,
+  });
+
+  @override
+  Widget build(
+      BuildContext context, double shrinkOffset, bool overlapsContent) {
+    return BasicPlayerInfo(player: player);
+  }
+
+  @override
+  double get maxExtent => height;
+
+  @override
+  double get minExtent => height;
+
+  @override
+  bool shouldRebuild(covariant SliverPersistentHeaderDelegate oldDelegate) {
+    return false;
+  }
+}
+
+class BasicPlayerInfo extends StatelessWidget {
+  final AudioPlayer player;
+
+  /// Collects the data useful for displaying in a seek bar, using a handy
+  /// feature of rx_dart to combine the 3 streams of interest into one.
+  late final Stream<PositionData> positionDataStream =
+      Rx.combineLatest3<Duration, Duration, Duration?, PositionData>(
+          player.positionStream,
+          player.bufferedPositionStream,
+          player.durationStream,
+          (position, bufferedPosition, duration) => PositionData(
+              position, bufferedPosition, duration ?? Duration.zero));
+
+  BasicPlayerInfo({
+    required this.player,
+    Key? key,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      color: Colors.white,
+      child: Column(
+        children: [
+          // Display play/pause button and volume/speed sliders.
+          ControlButtons(player),
+          // Display seek bar. Using StreamBuilder, this widget rebuilds
+          // each time the position, buffered position or duration changes.
+          StreamBuilder<PositionData>(
+            stream: positionDataStream,
+            initialData: PositionData(
+              player.position,
+              player.bufferedPosition,
+              player.duration ?? Duration.zero,
+            ),
+            builder: (context, snapshot) {
+              final positionData = snapshot.requireData;
+
+              return SeekBar(
+                duration: positionData.duration,
+                position: positionData.position,
+                bufferedPosition: positionData.bufferedPosition,
+                onChangeEnd: player.seek,
+              );
+            },
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+/// Displays the play/pause button and volume/speed sliders.
+class ControlButtons extends StatelessWidget {
+  final AudioPlayer player;
+
+  const ControlButtons(this.player, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        StreamBuilder<PlayerState>(
+          stream: player.playerStateStream,
+          builder: (context, snapshot) {
+            final playerState = snapshot.data;
+            final processingState = playerState?.processingState;
+            final playing = playerState?.playing ?? false;
+            if (processingState == ProcessingState.loading ||
+                processingState == ProcessingState.buffering) {
+              return Container(
+                margin: const EdgeInsets.all(8.0),
+                width: 64.0,
+                height: 64.0,
+                child: const CircularProgressIndicator(),
+              );
+            } else if (!playing) {
+              return IconButton(
+                icon: const Icon(Icons.play_arrow),
+                iconSize: 64.0,
+                onPressed: player.play,
+              );
+            } else if (processingState != ProcessingState.completed) {
+              return IconButton(
+                icon: const Icon(Icons.pause),
+                iconSize: 64.0,
+                onPressed: player.pause,
+              );
+            } else {
+              return IconButton(
+                icon: const Icon(Icons.replay),
+                iconSize: 64.0,
+                onPressed: () => player.seek(Duration.zero),
+              );
+            }
+          },
+        ),
+      ],
+    );
+  }
+}
diff --git a/just_audio/example/lib/full/reverb_controls.dart b/just_audio/example/lib/full/reverb_controls.dart
new file mode 100644
index 000000000..f466e7ac2
--- /dev/null
+++ b/just_audio/example/lib/full/reverb_controls.dart
@@ -0,0 +1,74 @@
+import 'package:flutter/material.dart';
+import 'package:just_audio/just_audio.dart';
+
+class ReverbControls extends StatelessWidget {
+  final DarwinReverb reverb;
+
+  const ReverbControls(this.reverb, {Key? key}) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text("Reverb", style: Theme.of(context).textTheme.headline3),
+        const SizedBox(height: 10),
+        Row(
+          children: [
+            StreamBuilder<bool>(
+              stream: reverb.enabledStream,
+              builder: (context, snap) => Switch(
+                value: snap.data ?? false,
+                onChanged: (change) async {
+                  await reverb.setEnabled(change);
+                },
+              ),
+            ),
+            const SizedBox(width: 10),
+            const Text("Activate"),
+          ],
+        ),
+        Row(
+          children: [
+            const SizedBox(width: 16),
+            StreamBuilder<DarwinReverbPreset>(
+              stream: reverb.presetStream,
+              builder: (context, AsyncSnapshot<DarwinReverbPreset> snap) {
+                return DropdownButton<DarwinReverbPreset>(
+                  value: snap.data,
+                  items: DarwinReverbPreset.values
+                      .map<DropdownMenuItem<DarwinReverbPreset>>(
+                        (e) => DropdownMenuItem(value: e, child: Text(e.name)),
+                      )
+                      .toList(),
+                  onChanged: (DarwinReverbPreset? change) async {
+                    if (change != null) {
+                      await reverb.setPreset(change);
+                    }
+                  },
+                );
+              },
+            ),
+            const SizedBox(width: 10),
+            const Text("Preset"),
+          ],
+        ),
+        const SizedBox(height: 16),
+        const Text("Reverb Wet Dry Mix"),
+        StreamBuilder<double>(
+          stream: reverb.wetDryMixStream,
+          builder: (context, snap) {
+            return Slider(
+              min: 0,
+              max: 100,
+              value: snap.data ?? reverb.wetDryMix,
+              onChanged: (change) async {
+                await reverb.setWetDryMix(change);
+              },
+            );
+          },
+        ),
+      ],
+    );
+  }
+}
diff --git a/just_audio/example/lib/full/write_to_file_controls.dart b/just_audio/example/lib/full/write_to_file_controls.dart
new file mode 100644
index 000000000..c3b40c8e5
--- /dev/null
+++ b/just_audio/example/lib/full/write_to_file_controls.dart
@@ -0,0 +1,70 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:just_audio/just_audio.dart';
+
+class WriteToFileControls extends StatelessWidget {
+  final AudioPlayer player;
+  const WriteToFileControls({
+    Key? key,
+    required this.player,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Text("Write to file", style: Theme.of(context).textTheme.headline3),
+        const SizedBox(height: 10),
+        Row(
+          children: [
+            StreamBuilder<bool>(
+              stream:
+                  player.outputAbsolutePathStream.map((event) => event != null),
+              builder: (context, snap) => Switch(
+                value: snap.data ?? false,
+                onChanged: (change) async {
+                  if (change) {
+                    await player.writeOutputToFile();
+                  } else {
+                    await player.stopWritingOutputToFile();
+                  }
+                },
+              ),
+            ),
+            const SizedBox(width: 10),
+            const Text("Activate"),
+          ],
+        ),
+        StreamBuilder<String?>(
+          stream: player.outputAbsolutePathStream,
+          builder: (context, snap) {
+            if (snap.data != null) {
+              return Column(
+                children: [
+                  Text(
+                    snap.data!,
+                    style: TextStyle(
+                      fontFamily: Platform.isIOS ? "Courier" : "monospace",
+                      fontSize: 16,
+                    ),
+                  ),
+                  const SizedBox(height: 10),
+                  OutlinedButton(
+                      onPressed: () {
+                        Clipboard.setData(ClipboardData(text: snap.data!));
+                      },
+                      child: const Text("Copy to clipboard"))
+                ],
+              );
+            }
+
+            return const Text("No output file path");
+          },
+        )
+      ],
+    );
+  }
+}
diff --git a/just_audio/example/lib/main.dart b/just_audio/example/lib/main.dart
index 862a65bc1..fde23ad93 100644
--- a/just_audio/example/lib/main.dart
+++ b/just_audio/example/lib/main.dart
@@ -7,6 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:just_audio/just_audio.dart';
 import 'package:just_audio_example/common.dart';
+import 'package:just_audio_example/widgets.dart';
 import 'package:rxdart/rxdart.dart';
 
 void main() => runApp(const MyApp());
@@ -40,12 +41,20 @@ class MyAppState extends State<MyApp> with WidgetsBindingObserver {
     _player.playbackEventStream.listen((event) {},
         onError: (Object e, StackTrace stackTrace) {
       print('A stream error occurred: $e');
+      print(stackTrace);
     });
     // Try to load audio from a source and catch any errors.
     try {
       // AAC example: https://dl.espressif.com/dl/audio/ff-16b-2c-44100hz.aac
-      await _player.setAudioSource(AudioSource.uri(Uri.parse(
-          "https://s3.amazonaws.com/scifri-episodes/scifri20181123-episode.mp3")));
+      await _player.setAudioSource(
+        ConcatenatingAudioSource(
+          children: [
+            // AudioSource.uri(Uri.parse("asset:///audio/nature.mp3")),
+            AudioSource.uri(Uri.parse(
+                "asset:///audio/assets_mp3_dua_lipa_dont_start_now.mp3")),
+          ],
+        ),
+      );
     } catch (e) {
       print("Error loading audio source: $e");
     }
@@ -71,14 +80,15 @@ class MyAppState extends State<MyApp> with WidgetsBindingObserver {
   }
 
   /// Collects the data useful for displaying in a seek bar, using a handy
-  /// feature of rx_dart to combine the 3 streams of interest into one.
-  Stream<PositionData> get _positionDataStream =>
-      Rx.combineLatest3<Duration, Duration, Duration?, PositionData>(
-          _player.positionStream,
-          _player.bufferedPositionStream,
-          _player.durationStream,
-          (position, bufferedPosition, duration) => PositionData(
-              position, bufferedPosition, duration ?? Duration.zero));
+  /// feature of rx_dart to combine the 4 streams of interest into one.
+  late final Stream<PositionData> _positionDataStream = Rx.combineLatest4<
+          PlayerState, Duration, Duration, Duration?, PositionData>(
+      _player.playerStateStream,
+      _player.positionStream,
+      _player.bufferedPositionStream,
+      _player.durationStream, (state, position, bufferedPosition, duration) {
+    return PositionData(position, bufferedPosition, duration ?? Duration.zero);
+  });
 
   @override
   Widget build(BuildContext context) {
@@ -96,13 +106,18 @@ class MyAppState extends State<MyApp> with WidgetsBindingObserver {
               // each time the position, buffered position or duration changes.
               StreamBuilder<PositionData>(
                 stream: _positionDataStream,
+                initialData: PositionData(
+                  _player.position,
+                  _player.bufferedPosition,
+                  _player.duration ?? Duration.zero,
+                ),
                 builder: (context, snapshot) {
-                  final positionData = snapshot.data;
+                  final positionData = snapshot.requireData;
+
                   return SeekBar(
-                    duration: positionData?.duration ?? Duration.zero,
-                    position: positionData?.position ?? Duration.zero,
-                    bufferedPosition:
-                        positionData?.bufferedPosition ?? Duration.zero,
+                    duration: positionData.duration,
+                    position: positionData.position,
+                    bufferedPosition: positionData.bufferedPosition,
                     onChangeEnd: _player.seek,
                   );
                 },
@@ -123,84 +138,123 @@ class ControlButtons extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Row(
-      mainAxisSize: MainAxisSize.min,
+    return Column(
       children: [
-        // Opens volume slider dialog
-        IconButton(
-          icon: const Icon(Icons.volume_up),
-          onPressed: () {
-            showSliderDialog(
-              context: context,
-              title: "Adjust volume",
-              divisions: 10,
-              min: 0.0,
-              max: 1.0,
-              value: player.volume,
-              stream: player.volumeStream,
-              onChanged: player.setVolume,
+        Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            // Opens volume slider dialog
+            IconButton(
+              icon: const Icon(Icons.volume_up),
+              onPressed: () {
+                showSliderDialog(
+                  context: context,
+                  title: "Adjust volume",
+                  divisions: 10,
+                  min: 0.0,
+                  max: 1.0,
+                  value: player.volume,
+                  stream: player.volumeStream,
+                  onChanged: player.setVolume,
+                );
+              },
+            ),
+
+            /// This StreamBuilder rebuilds whenever the player state changes, which
+            /// includes the playing/paused state and also the
+            /// loading/buffering/ready state. Depending on the state we show the
+            /// appropriate button or loading indicator.
+            StreamBuilder<PlayerState>(
+              stream: player.playerStateStream,
+              builder: (context, snapshot) {
+                final playerState = snapshot.data;
+                final processingState = playerState?.processingState;
+                final playing = playerState?.playing ?? false;
+                if (processingState == ProcessingState.loading ||
+                    processingState == ProcessingState.buffering) {
+                  return Container(
+                    margin: const EdgeInsets.all(8.0),
+                    width: 64.0,
+                    height: 64.0,
+                    child: const CircularProgressIndicator(),
+                  );
+                } else if (!playing) {
+                  return IconButton(
+                    icon: const Icon(Icons.play_arrow),
+                    iconSize: 64.0,
+                    onPressed: player.play,
+                  );
+                } else if (processingState != ProcessingState.completed) {
+                  return IconButton(
+                    icon: const Icon(Icons.pause),
+                    iconSize: 64.0,
+                    onPressed: player.pause,
+                  );
+                } else {
+                  return IconButton(
+                    icon: const Icon(Icons.replay),
+                    iconSize: 64.0,
+                    onPressed: () => player.seek(Duration.zero),
+                  );
+                }
+              },
+            ),
+            // Opens speed slider dialog
+            StreamBuilder<double>(
+              stream: player.speedStream,
+              builder: (context, snapshot) => IconButton(
+                icon: Text("${snapshot.data?.toStringAsFixed(1)}x",
+                    style: const TextStyle(fontWeight: FontWeight.bold)),
+                onPressed: () {
+                  showSliderDialog(
+                    context: context,
+                    title: "Adjust speed",
+                    divisions: 10,
+                    min: 0.5,
+                    max: 1.5,
+                    value: player.speed,
+                    stream: player.speedStream,
+                    onChanged: player.setSpeed,
+                  );
+                },
+              ),
+            ),
+          ],
+        ),
+        ValueStreamBuilder<bool>(
+          stream: player.shuffleModeEnabledStream,
+          initialValue: player.shuffleModeEnabled,
+          builder: (context, isShuffleModeEnable) {
+            return DebugLabel(
+              label: '$isShuffleModeEnable',
+              child: IconButton(
+                icon: isShuffleModeEnable
+                    ? const Icon(Icons.shuffle_on_rounded)
+                    : const Icon(Icons.shuffle),
+                iconSize: 64.0,
+                onPressed: () =>
+                    player.setShuffleModeEnabled(!isShuffleModeEnable),
+              ),
             );
           },
         ),
-
-        /// This StreamBuilder rebuilds whenever the player state changes, which
-        /// includes the playing/paused state and also the
-        /// loading/buffering/ready state. Depending on the state we show the
-        /// appropriate button or loading indicator.
-        StreamBuilder<PlayerState>(
-          stream: player.playerStateStream,
-          builder: (context, snapshot) {
-            final playerState = snapshot.data;
-            final processingState = playerState?.processingState;
-            final playing = playerState?.playing;
-            if (processingState == ProcessingState.loading ||
-                processingState == ProcessingState.buffering) {
-              return Container(
-                margin: const EdgeInsets.all(8.0),
-                width: 64.0,
-                height: 64.0,
-                child: const CircularProgressIndicator(),
-              );
-            } else if (playing != true) {
-              return IconButton(
-                icon: const Icon(Icons.play_arrow),
-                iconSize: 64.0,
-                onPressed: player.play,
-              );
-            } else if (processingState != ProcessingState.completed) {
-              return IconButton(
-                icon: const Icon(Icons.pause),
+        ValueStreamBuilder<LoopMode>(
+          stream: player.loopModeStream,
+          initialValue: player.loopMode,
+          builder: (context, loopMode) {
+            return DebugLabel(
+              label: loopMode.name,
+              child: IconButton(
+                icon: const Icon(Icons.loop),
                 iconSize: 64.0,
-                onPressed: player.pause,
-              );
-            } else {
-              return IconButton(
-                icon: const Icon(Icons.replay),
-                iconSize: 64.0,
-                onPressed: () => player.seek(Duration.zero),
-              );
-            }
+                onPressed: () => player.setLoopMode(loopMode.next),
+              ),
+            );
           },
         ),
-        // Opens speed slider dialog
-        StreamBuilder<double>(
-          stream: player.speedStream,
-          builder: (context, snapshot) => IconButton(
-            icon: Text("${snapshot.data?.toStringAsFixed(1)}x",
-                style: const TextStyle(fontWeight: FontWeight.bold)),
-            onPressed: () {
-              showSliderDialog(
-                context: context,
-                title: "Adjust speed",
-                divisions: 10,
-                min: 0.5,
-                max: 1.5,
-                value: player.speed,
-                stream: player.speedStream,
-                onChanged: player.setSpeed,
-              );
-            },
-          ),
+        TextButton(
+          onPressed: player.shuffle,
+          child: const Text('Shuffle indices'),
         ),
       ],
     );
diff --git a/just_audio/example/lib/widgets.dart b/just_audio/example/lib/widgets.dart
new file mode 100644
index 000000000..62c68aef0
--- /dev/null
+++ b/just_audio/example/lib/widgets.dart
@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+import 'package:just_audio/just_audio.dart';
+
+class DebugLabel extends StatelessWidget {
+  final String label;
+  final Widget child;
+
+  const DebugLabel({
+    Key? key,
+    required this.label,
+    required this.child,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Stack(
+      fit: StackFit.loose,
+      children: [
+        Positioned(child: child),
+        Positioned(
+          left: 0.0,
+          right: 0.0,
+          bottom: 0.0,
+          child: Center(
+            child: Text(label),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class ValueStreamBuilder<T> extends StreamBuilderBase<T, T> {
+  final T initialValue;
+  final Widget Function(BuildContext context, T value) builder;
+
+  const ValueStreamBuilder({
+    Key? key,
+    required Stream<T> stream,
+    required this.initialValue,
+    required this.builder,
+  }) : super(key: key, stream: stream);
+
+  @override
+  T afterData(T current, T data) => data;
+
+  @override
+  Widget build(BuildContext context, T currentSummary) =>
+      builder(context, currentSummary);
+
+  @override
+  T initial() => initialValue;
+}
+
+extension NextLoopModeExtension on LoopMode {
+  LoopMode get next => LoopMode.values[(index + 1) % LoopMode.values.length];
+}
diff --git a/just_audio/example/macos/.gitignore b/just_audio/example/macos/.gitignore
index d2fd37723..746adbb6b 100644
--- a/just_audio/example/macos/.gitignore
+++ b/just_audio/example/macos/.gitignore
@@ -3,4 +3,5 @@
 **/Pods/
 
 # Xcode-related
+**/dgph
 **/xcuserdata/
diff --git a/just_audio/example/macos/Flutter/Flutter-Debug.xcconfig b/just_audio/example/macos/Flutter/Flutter-Debug.xcconfig
index 785633d3a..4b81f9b2d 100644
--- a/just_audio/example/macos/Flutter/Flutter-Debug.xcconfig
+++ b/just_audio/example/macos/Flutter/Flutter-Debug.xcconfig
@@ -1,2 +1,2 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"
 #include "ephemeral/Flutter-Generated.xcconfig"
diff --git a/just_audio/example/macos/Flutter/Flutter-Release.xcconfig b/just_audio/example/macos/Flutter/Flutter-Release.xcconfig
index 5fba960c3..5caa9d157 100644
--- a/just_audio/example/macos/Flutter/Flutter-Release.xcconfig
+++ b/just_audio/example/macos/Flutter/Flutter-Release.xcconfig
@@ -1,2 +1,2 @@
-#include "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
+#include? "Pods/Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"
 #include "ephemeral/Flutter-Generated.xcconfig"
diff --git a/just_audio/example/macos/Podfile b/just_audio/example/macos/Podfile
index 9ec46f8cd..fe733905d 100644
--- a/just_audio/example/macos/Podfile
+++ b/just_audio/example/macos/Podfile
@@ -1,4 +1,4 @@
-platform :osx, '10.15'
+platform :osx, '10.13'
 
 # CocoaPods analytics sends network stats synchronously affecting flutter build latency.
 ENV['COCOAPODS_DISABLE_STATS'] = 'true'
diff --git a/just_audio/example/macos/Podfile.lock b/just_audio/example/macos/Podfile.lock
index bc84df6fb..e735273c6 100644
--- a/just_audio/example/macos/Podfile.lock
+++ b/just_audio/example/macos/Podfile.lock
@@ -25,10 +25,10 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   audio_session: dea1f41890dbf1718f04a56f1d6150fd50039b72
-  FlutterMacOS: 57701585bf7de1b3fc2bb61f6378d73bbdea8424
-  just_audio: 9b67ca7b97c61cfc9784ea23cd8cc55eb226d489
-  path_provider_macos: 160cab0d5461f0c0e02995469a98f24bdb9a3f1f
+  FlutterMacOS: ae6af50a8ea7d6103d888583d46bd8328a7e9811
+  just_audio: 9bd03a840e007eb136204e2b7de2a71bf7590fe5
+  path_provider_macos: 3c0c3b4b0d4a76d2bf989a913c2de869c5641a19
 
-PODFILE CHECKSUM: 0d3963a09fc94f580682bd88480486da345dc3f0
+PODFILE CHECKSUM: a884f6dd3f7494f3892ee6c81feea3a3abbf9153
 
 COCOAPODS: 1.11.3
diff --git a/just_audio/example/macos/Runner.xcodeproj/project.pbxproj b/just_audio/example/macos/Runner.xcodeproj/project.pbxproj
index d024b09be..068aefe65 100644
--- a/just_audio/example/macos/Runner.xcodeproj/project.pbxproj
+++ b/just_audio/example/macos/Runner.xcodeproj/project.pbxproj
@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 51;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXAggregateTarget section */
@@ -21,12 +21,12 @@
 /* End PBXAggregateTarget section */
 
 /* Begin PBXBuildFile section */
-		1BEEF829E111499DFFB9AFA4 /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 77D68B92366F60419FE029D8 /* Pods_Runner.framework */; };
 		335BBD1B22A9A15E00E9071D /* GeneratedPluginRegistrant.swift in Sources */ = {isa = PBXBuildFile; fileRef = 335BBD1A22A9A15E00E9071D /* GeneratedPluginRegistrant.swift */; };
 		33CC10F12044A3C60003C045 /* AppDelegate.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC10F02044A3C60003C045 /* AppDelegate.swift */; };
 		33CC10F32044A3C60003C045 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F22044A3C60003C045 /* Assets.xcassets */; };
 		33CC10F62044A3C60003C045 /* MainMenu.xib in Resources */ = {isa = PBXBuildFile; fileRef = 33CC10F42044A3C60003C045 /* MainMenu.xib */; };
 		33CC11132044BFA00003C045 /* MainFlutterWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = 33CC11122044BFA00003C045 /* MainFlutterWindow.swift */; };
+		C0685188D90B8D9556C1F6EA /* Pods_Runner.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = BA333486A8DEE92B6AF3E57E /* Pods_Runner.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -67,12 +67,12 @@
 		33E51913231747F40026EE4D /* DebugProfile.entitlements */ = {isa = PBXFileReference; lastKnownFileType = text.plist.entitlements; path = DebugProfile.entitlements; sourceTree = "<group>"; };
 		33E51914231749380026EE4D /* Release.entitlements */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.entitlements; path = Release.entitlements; sourceTree = "<group>"; };
 		33E5194F232828860026EE4D /* AppInfo.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = AppInfo.xcconfig; sourceTree = "<group>"; };
-		409BAEF54B9B17B5585F3A06 /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
-		77D68B92366F60419FE029D8 /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		7AFA3C8E1D35360C0083082E /* Release.xcconfig */ = {isa = PBXFileReference; lastKnownFileType = text.xcconfig; path = Release.xcconfig; sourceTree = "<group>"; };
+		7DA51EB1B3DCCDF868A25F6D /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
+		95C3A0DD33EEF7D7AB4DE3AA /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
 		9740EEB21CF90195004384FC /* Debug.xcconfig */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.xcconfig; path = Debug.xcconfig; sourceTree = "<group>"; };
-		9C700360F2F4515FF4E74F2B /* Pods-Runner.profile.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.profile.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.profile.xcconfig"; sourceTree = "<group>"; };
-		DA266879E6DA6E3956F07D12 /* Pods-Runner.release.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.release.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.release.xcconfig"; sourceTree = "<group>"; };
+		A11E5ACEDE7665D68E619AD8 /* Pods-Runner.debug.xcconfig */ = {isa = PBXFileReference; includeInIndex = 1; lastKnownFileType = text.xcconfig; name = "Pods-Runner.debug.xcconfig"; path = "Target Support Files/Pods-Runner/Pods-Runner.debug.xcconfig"; sourceTree = "<group>"; };
+		BA333486A8DEE92B6AF3E57E /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -80,13 +80,24 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
-				1BEEF829E111499DFFB9AFA4 /* Pods_Runner.framework in Frameworks */,
+				C0685188D90B8D9556C1F6EA /* Pods_Runner.framework in Frameworks */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		201BC54621619A3DE538A13A /* Pods */ = {
+			isa = PBXGroup;
+			children = (
+				A11E5ACEDE7665D68E619AD8 /* Pods-Runner.debug.xcconfig */,
+				95C3A0DD33EEF7D7AB4DE3AA /* Pods-Runner.release.xcconfig */,
+				7DA51EB1B3DCCDF868A25F6D /* Pods-Runner.profile.xcconfig */,
+			);
+			name = Pods;
+			path = Pods;
+			sourceTree = "<group>";
+		};
 		33BA886A226E78AF003329D5 /* Configs */ = {
 			isa = PBXGroup;
 			children = (
@@ -105,7 +116,7 @@
 				33CEB47122A05771004F2AC0 /* Flutter */,
 				33CC10EE2044A3C60003C045 /* Products */,
 				D73912EC22F37F3D000D13A0 /* Frameworks */,
-				B89C79F942A13E07457B4DD9 /* Pods */,
+				201BC54621619A3DE538A13A /* Pods */,
 			);
 			sourceTree = "<group>";
 		};
@@ -152,21 +163,10 @@
 			path = Runner;
 			sourceTree = "<group>";
 		};
-		B89C79F942A13E07457B4DD9 /* Pods */ = {
-			isa = PBXGroup;
-			children = (
-				409BAEF54B9B17B5585F3A06 /* Pods-Runner.debug.xcconfig */,
-				DA266879E6DA6E3956F07D12 /* Pods-Runner.release.xcconfig */,
-				9C700360F2F4515FF4E74F2B /* Pods-Runner.profile.xcconfig */,
-			);
-			name = Pods;
-			path = Pods;
-			sourceTree = "<group>";
-		};
 		D73912EC22F37F3D000D13A0 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
-				77D68B92366F60419FE029D8 /* Pods_Runner.framework */,
+				BA333486A8DEE92B6AF3E57E /* Pods_Runner.framework */,
 			);
 			name = Frameworks;
 			sourceTree = "<group>";
@@ -178,13 +178,13 @@
 			isa = PBXNativeTarget;
 			buildConfigurationList = 33CC10FB2044A3C60003C045 /* Build configuration list for PBXNativeTarget "Runner" */;
 			buildPhases = (
-				2E7987DC1DC14DA8A4B13BF3 /* [CP] Check Pods Manifest.lock */,
+				52E1427FD621F077A166251D /* [CP] Check Pods Manifest.lock */,
 				33CC10E92044A3C60003C045 /* Sources */,
 				33CC10EA2044A3C60003C045 /* Frameworks */,
 				33CC10EB2044A3C60003C045 /* Resources */,
 				33CC110E2044A8840003C045 /* Bundle Framework */,
 				3399D490228B24CF009A79C7 /* ShellScript */,
-				31D443903C4E40636BA59DB3 /* [CP] Embed Pods Frameworks */,
+				CF34D3A3E047425526A181B0 /* [CP] Embed Pods Frameworks */,
 			);
 			buildRules = (
 			);
@@ -203,8 +203,8 @@
 			isa = PBXProject;
 			attributes = {
 				LastSwiftUpdateCheck = 0920;
-				LastUpgradeCheck = 0930;
-				ORGANIZATIONNAME = "The Flutter Authors";
+				LastUpgradeCheck = 1300;
+				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					33CC10EC2044A3C60003C045 = {
 						CreatedOnToolsVersion = 9.2;
@@ -223,7 +223,7 @@
 				};
 			};
 			buildConfigurationList = 33CC10E82044A3C60003C045 /* Build configuration list for PBXProject "Runner" */;
-			compatibilityVersion = "Xcode 8.0";
+			compatibilityVersion = "Xcode 9.3";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -254,51 +254,45 @@
 /* End PBXResourcesBuildPhase section */
 
 /* Begin PBXShellScriptBuildPhase section */
-		2E7987DC1DC14DA8A4B13BF3 /* [CP] Check Pods Manifest.lock */ = {
+		3399D490228B24CF009A79C7 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
+			alwaysOutOfDate = 1;
 			buildActionMask = 2147483647;
 			files = (
 			);
 			inputFileListPaths = (
 			);
 			inputPaths = (
-				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
-				"${PODS_ROOT}/Manifest.lock",
 			);
-			name = "[CP] Check Pods Manifest.lock";
 			outputFileListPaths = (
 			);
 			outputPaths = (
-				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
-			showEnvVarsInLog = 0;
+			shellScript = "echo \"$PRODUCT_NAME.app\" > \"$PROJECT_DIR\"/Flutter/ephemeral/.app_filename && \"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh embed\n";
 		};
-		31D443903C4E40636BA59DB3 /* [CP] Embed Pods Frameworks */ = {
+		33CC111E2044C6BF0003C045 /* ShellScript */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
 			);
+			inputFileListPaths = (
+				Flutter/ephemeral/FlutterInputs.xcfilelist,
+			);
 			inputPaths = (
-				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
-				"${BUILT_PRODUCTS_DIR}/audio_session/audio_session.framework",
-				"${BUILT_PRODUCTS_DIR}/just_audio/just_audio.framework",
-				"${BUILT_PRODUCTS_DIR}/path_provider_macos/path_provider_macos.framework",
+				Flutter/ephemeral/tripwire,
+			);
+			outputFileListPaths = (
+				Flutter/ephemeral/FlutterOutputs.xcfilelist,
 			);
-			name = "[CP] Embed Pods Frameworks";
 			outputPaths = (
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/audio_session.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/just_audio.framework",
-				"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/path_provider_macos.framework",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";
-			showEnvVarsInLog = 0;
+			shellScript = "\"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh && touch Flutter/ephemeral/tripwire";
 		};
-		3399D490228B24CF009A79C7 /* ShellScript */ = {
+		52E1427FD621F077A166251D /* [CP] Check Pods Manifest.lock */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
@@ -306,34 +300,36 @@
 			inputFileListPaths = (
 			);
 			inputPaths = (
+				"${PODS_PODFILE_DIR_PATH}/Podfile.lock",
+				"${PODS_ROOT}/Manifest.lock",
 			);
+			name = "[CP] Check Pods Manifest.lock";
 			outputFileListPaths = (
 			);
 			outputPaths = (
+				"$(DERIVED_FILE_DIR)/Pods-Runner-checkManifestLockResult.txt",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "echo \"$PRODUCT_NAME.app\" > \"$PROJECT_DIR\"/Flutter/ephemeral/.app_filename && \"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh embed\n";
+			shellScript = "diff \"${PODS_PODFILE_DIR_PATH}/Podfile.lock\" \"${PODS_ROOT}/Manifest.lock\" > /dev/null\nif [ $? != 0 ] ; then\n    # print error to STDERR\n    echo \"error: The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation.\" >&2\n    exit 1\nfi\n# This output is used by Xcode 'outputs' to avoid re-running this script phase.\necho \"SUCCESS\" > \"${SCRIPT_OUTPUT_FILE_0}\"\n";
+			showEnvVarsInLog = 0;
 		};
-		33CC111E2044C6BF0003C045 /* ShellScript */ = {
+		CF34D3A3E047425526A181B0 /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
 			);
 			inputFileListPaths = (
-				Flutter/ephemeral/FlutterInputs.xcfilelist,
-			);
-			inputPaths = (
-				Flutter/ephemeral/tripwire,
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-input-files.xcfilelist",
 			);
+			name = "[CP] Embed Pods Frameworks";
 			outputFileListPaths = (
-				Flutter/ephemeral/FlutterOutputs.xcfilelist,
-			);
-			outputPaths = (
+				"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks-${CONFIGURATION}-output-files.xcfilelist",
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "\"$FLUTTER_ROOT\"/packages/flutter_tools/bin/macos_assemble.sh && touch Flutter/ephemeral/tripwire\n";
+			shellScript = "\"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh\"\n";
+			showEnvVarsInLog = 0;
 		};
 /* End PBXShellScriptBuildPhase section */
 
@@ -409,7 +405,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.12.2;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -426,10 +422,6 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/DebugProfile.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter/ephemeral",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
@@ -492,7 +484,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.12.2;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
@@ -539,7 +531,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.12.2;
+				MACOSX_DEPLOYMENT_TARGET = 10.13;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = macosx;
 				SWIFT_COMPILATION_MODE = wholemodule;
@@ -556,10 +548,6 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/DebugProfile.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter/ephemeral",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
@@ -580,10 +568,6 @@
 				CODE_SIGN_ENTITLEMENTS = Runner/Release.entitlements;
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				FRAMEWORK_SEARCH_PATHS = (
-					"$(inherited)",
-					"$(PROJECT_DIR)/Flutter/ephemeral",
-				);
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
diff --git a/just_audio/example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme b/just_audio/example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
index df12c333e..fb7259e17 100644
--- a/just_audio/example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+++ b/just_audio/example/macos/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1000"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -27,18 +27,6 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES">
-      <Testables>
-         <TestableReference
-            skipped = "NO">
-            <BuildableReference
-               BuildableIdentifier = "primary"
-               BlueprintIdentifier = "00380F9121DF178D00097171"
-               BuildableName = "RunnerUITests.xctest"
-               BlueprintName = "RunnerUITests"
-               ReferencedContainer = "container:Runner.xcodeproj">
-            </BuildableReference>
-         </TestableReference>
-      </Testables>
       <MacroExpansion>
          <BuildableReference
             BuildableIdentifier = "primary"
@@ -48,8 +36,8 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
+      <Testables>
+      </Testables>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -71,11 +59,9 @@
             ReferencedContainer = "container:Runner.xcodeproj">
          </BuildableReference>
       </BuildableProductRunnable>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
-      buildConfiguration = "Release"
+      buildConfiguration = "Profile"
       shouldUseLaunchSchemeArgsEnv = "YES"
       savedToolIdentifier = ""
       useCustomWorkingDirectory = "NO"
diff --git a/just_audio/example/macos/Runner/AppDelegate.swift b/just_audio/example/macos/Runner/AppDelegate.swift
index d53ef6437..8f3dd47c6 100644
--- a/just_audio/example/macos/Runner/AppDelegate.swift
+++ b/just_audio/example/macos/Runner/AppDelegate.swift
@@ -3,7 +3,7 @@ import FlutterMacOS
 
 @NSApplicationMain
 class AppDelegate: FlutterAppDelegate {
-  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
-    return true
-  }
+    override func applicationShouldTerminateAfterLastWindowClosed(_: NSApplication) -> Bool {
+        return true
+    }
 }
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png
index 3c4935a7c..82b6f9d9a 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_1024.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png
index ed4cc1642..13b35eba5 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_128.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png
index 483be6138..0a3f5fa40 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_16.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png
index bcbf36df2..bdb57226d 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_256.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png
index 9c0a65286..f083318e0 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_32.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png
index e71a72613..326c0e72c 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_512.png differ
diff --git a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png
index 8a31fe2dd..2f1632cfd 100644
Binary files a/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png and b/just_audio/example/macos/Runner/Assets.xcassets/AppIcon.appiconset/app_icon_64.png differ
diff --git a/just_audio/example/macos/Runner/Base.lproj/MainMenu.xib b/just_audio/example/macos/Runner/Base.lproj/MainMenu.xib
index 537341abf..80e867a4e 100644
--- a/just_audio/example/macos/Runner/Base.lproj/MainMenu.xib
+++ b/just_audio/example/macos/Runner/Base.lproj/MainMenu.xib
@@ -323,6 +323,10 @@
                         </items>
                     </menu>
                 </menuItem>
+                <menuItem title="Help" id="EPT-qC-fAb">
+                    <modifierMask key="keyEquivalentModifierMask"/>
+                    <menu key="submenu" title="Help" systemMenu="help" id="rJ0-wn-3NY"/>
+                </menuItem>
             </items>
             <point key="canvasLocation" x="142" y="-258"/>
         </menu>
diff --git a/just_audio/example/macos/Runner/Configs/AppInfo.xcconfig b/just_audio/example/macos/Runner/Configs/AppInfo.xcconfig
index ff6900288..c173338b5 100644
--- a/just_audio/example/macos/Runner/Configs/AppInfo.xcconfig
+++ b/just_audio/example/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = example
 PRODUCT_BUNDLE_IDENTIFIER = com.ryanheise.example
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2020 com.ryanheise. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2022 com.ryanheise. All rights reserved.
diff --git a/just_audio/example/macos/Runner/MainFlutterWindow.swift b/just_audio/example/macos/Runner/MainFlutterWindow.swift
index 2722837ec..decbd0eb1 100644
--- a/just_audio/example/macos/Runner/MainFlutterWindow.swift
+++ b/just_audio/example/macos/Runner/MainFlutterWindow.swift
@@ -2,14 +2,14 @@ import Cocoa
 import FlutterMacOS
 
 class MainFlutterWindow: NSWindow {
-  override func awakeFromNib() {
-    let flutterViewController = FlutterViewController.init()
-    let windowFrame = self.frame
-    self.contentViewController = flutterViewController
-    self.setFrame(windowFrame, display: true)
+    override func awakeFromNib() {
+        let flutterViewController = FlutterViewController()
+        let windowFrame = frame
+        contentViewController = flutterViewController
+        setFrame(windowFrame, display: true)
 
-    RegisterGeneratedPlugins(registry: flutterViewController)
+        RegisterGeneratedPlugins(registry: flutterViewController)
 
-    super.awakeFromNib()
-  }
+        super.awakeFromNib()
+    }
 }
diff --git a/just_audio/example/macos/Runner/Release.entitlements b/just_audio/example/macos/Runner/Release.entitlements
index ee95ab7e5..852fa1a47 100644
--- a/just_audio/example/macos/Runner/Release.entitlements
+++ b/just_audio/example/macos/Runner/Release.entitlements
@@ -4,7 +4,5 @@
 <dict>
 	<key>com.apple.security.app-sandbox</key>
 	<true/>
-	<key>com.apple.security.network.client</key>
-	<true/>
 </dict>
 </plist>
diff --git a/just_audio/example/pubspec.yaml b/just_audio/example/pubspec.yaml
index 8b9e8e936..5abbc7676 100644
--- a/just_audio/example/pubspec.yaml
+++ b/just_audio/example/pubspec.yaml
@@ -9,7 +9,7 @@ dependencies:
   flutter:
     sdk: flutter
   audio_session: ^0.1.7
-  rxdart: '^0.27.0'
+  rxdart: ^0.27.0
   just_audio_mpv: ^0.1.4
   just_audio_windows: ^0.1.0
   # Other platform implementations below:
@@ -18,9 +18,9 @@ dependencies:
     path: ../
 
 # Uncomment when testing platform interface changes.
-# dependency_overrides:
-#   just_audio_platform_interface:
-#     path: ../../just_audio_platform_interface
+dependency_overrides:
+  just_audio_platform_interface:
+    path: ../../just_audio_platform_interface
 #   just_audio_web:
 #     path: ../../just_audio_web
 
diff --git a/just_audio/ios/.gitignore b/just_audio/ios/.gitignore
index aa479fd3c..0c885071e 100644
--- a/just_audio/ios/.gitignore
+++ b/just_audio/ios/.gitignore
@@ -34,4 +34,5 @@ Icon?
 .tags*
 
 /Flutter/Generated.xcconfig
+/Flutter/ephemeral/
 /Flutter/flutter_export_environment.sh
\ No newline at end of file
diff --git a/just_audio/ios/Classes/AudioEffects/AudioEffect.swift b/just_audio/ios/Classes/AudioEffects/AudioEffect.swift
new file mode 100644
index 000000000..1d56b440e
--- /dev/null
+++ b/just_audio/ios/Classes/AudioEffects/AudioEffect.swift
@@ -0,0 +1,20 @@
+//
+// Effects.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 11/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFAudio
+
+/**
+ * Represents an Audio Effect to be applied to an `AudioSource`
+ */
+public protocol AudioEffect {
+    var effect: AVAudioUnit { get }
+
+    var bypass: Bool { get }
+
+    func setBypass(_ bypass: Bool)
+}
diff --git a/just_audio/ios/Classes/AudioEffects/DelayAudioEffect.swift b/just_audio/ios/Classes/AudioEffects/DelayAudioEffect.swift
new file mode 100644
index 000000000..295093c8f
--- /dev/null
+++ b/just_audio/ios/Classes/AudioEffects/DelayAudioEffect.swift
@@ -0,0 +1,74 @@
+//
+// DelayAudioEffect.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 14/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFAudio
+
+/**
+ * Represents an `AVAudioUnitDelay`, an object that implements a delay effect.
+ */
+public class DelayAudioEffect: AudioEffect {
+    public private(set) var effect: AVAudioUnit
+
+    private var _effect: AVAudioUnitDelay {
+        return effect as! AVAudioUnitDelay
+    }
+
+    // The time for the input signal to reach the output.
+    public var delayTime: TimeInterval {
+        _effect.delayTime
+    }
+
+    /// The amount of the output signal that feeds back into the delay line.
+    public var feedback: Float {
+        _effect.feedback
+    }
+
+    /// The cutoff frequency above which high frequency content rolls off, in hertz.
+    public var lowPassCutoff: Float {
+        _effect.lowPassCutoff
+    }
+
+    /// The blend of the distorted and dry signals.
+    public var wetDryMix: Float {
+        _effect.wetDryMix
+    }
+
+    /// The bypass state of the audio unit.
+    public var bypass: Bool {
+        _effect.bypass
+    }
+
+    public init() {
+        effect = AVAudioUnitDelay()
+    }
+
+    /// Updates the time for the input signal to reach the output.
+    public func setDelayTime(_ delayTime: TimeInterval) {
+        _effect.delayTime = delayTime
+    }
+
+    /// Updates the amount of the output signal that feeds back into the delay line.
+    public func setFeedback(_ feedback: Float) {
+        _effect.feedback = feedback
+    }
+
+    /// Updates the cutoff frequency above which high frequency content rolls off, in hertz.
+    public func setLowPassCutoff(_ lowPassCutoff: Float) {
+        _effect.lowPassCutoff = lowPassCutoff
+    }
+
+    /// Updates the blend of the distorted and dry signals.
+    public func setWetDryMix(_ wetDryMix: Float) {
+        _effect.wetDryMix = wetDryMix
+    }
+
+    /// Updates the bypass state of the audio unit.
+    public func setBypass(_ bypass: Bool) {
+        _effect.bypass = bypass
+    }
+}
diff --git a/just_audio/ios/Classes/AudioEffects/DistortionAudioEffect.swift b/just_audio/ios/Classes/AudioEffects/DistortionAudioEffect.swift
new file mode 100644
index 000000000..0ea330c59
--- /dev/null
+++ b/just_audio/ios/Classes/AudioEffects/DistortionAudioEffect.swift
@@ -0,0 +1,66 @@
+//
+// DistortionAudioEffect.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 14/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFAudio
+
+/**
+ * Represents an `AVAudioUnitDistortion`, an object that implements a multistage distortion effect.
+ */
+public class DistortionAudioEffect: AudioEffect {
+    public private(set) var effect: AVAudioUnit
+
+    private var _effect: AVAudioUnitDistortion {
+        return effect as! AVAudioUnitDistortion
+    }
+
+    /// The gain that the audio unit applies to the signal before distortion, in decibels.
+    public var preGain: Float {
+        _effect.preGain
+    }
+
+    /// The blend of the distorted and dry signals.
+    public var wetDryMix: Float {
+        _effect.wetDryMix
+    }
+
+    /// As per doc, this is the default value
+    public private(set) var preset: AVAudioUnitDistortionPreset = .drumsBitBrush
+
+    /// The bypass state of the audio unit.
+    public var bypass: Bool {
+        _effect.bypass
+    }
+
+    public init(_ preset: AVAudioUnitDistortionPreset? = nil) {
+        effect = AVAudioUnitDistortion()
+        if let preset = preset {
+            setPreset(preset)
+        }
+    }
+
+    /// Configures the audio distortion unit by loading a distortion preset.
+    public func setPreset(_ preset: AVAudioUnitDistortionPreset) {
+        _effect.loadFactoryPreset(preset)
+        self.preset = preset
+    }
+
+    /// Updates the gain that the audio unit applies to the signal before distortion, in decibels.
+    public func setPreGain(_ preGain: Float) {
+        _effect.preGain = preGain
+    }
+
+    /// Updates the blend of the distorted and dry signals.
+    public func setWetDryMix(_ wetDryMix: Float) {
+        _effect.wetDryMix = wetDryMix
+    }
+
+    /// Updates the bypass state of the audio unit.
+    public func setBypass(_ bypass: Bool) {
+        _effect.bypass = bypass
+    }
+}
diff --git a/just_audio/ios/Classes/AudioEffects/ReverbAudioEffect.swift b/just_audio/ios/Classes/AudioEffects/ReverbAudioEffect.swift
new file mode 100644
index 000000000..174f62a07
--- /dev/null
+++ b/just_audio/ios/Classes/AudioEffects/ReverbAudioEffect.swift
@@ -0,0 +1,56 @@
+//
+// ReverbAudioEffect.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 14/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFAudio
+
+/**
+ * Represents a `AVAudioUnitReverb`, an object that implements a reverb effect.
+ */
+public class ReverbAudioEffect: AudioEffect {
+    public private(set) var effect: AVAudioUnit
+
+    private var _effect: AVAudioUnitReverb {
+        return effect as! AVAudioUnitReverb
+    }
+
+    /// The blend of the distorted and dry signals.
+    public var wetDryMix: Float {
+        _effect.wetDryMix
+    }
+
+    /// As per doc, this is the default value
+    public private(set) var preset: AVAudioUnitReverbPreset = .mediumHall
+
+    /// The bypass state of the audio unit.
+    public var bypass: Bool {
+        _effect.bypass
+    }
+
+    public init(_ preset: AVAudioUnitReverbPreset? = nil) {
+        effect = AVAudioUnitReverb()
+        if let preset = preset {
+            setPreset(preset)
+        }
+    }
+
+    /// Configures the audio unit as a reverb preset.
+    public func setPreset(_ preset: AVAudioUnitReverbPreset) {
+        _effect.loadFactoryPreset(preset)
+        self.preset = preset
+    }
+
+    /// Updates the blend of the distorted and dry signals.
+    public func setWetDryMix(_ wetDryMix: Float) {
+        _effect.wetDryMix = wetDryMix
+    }
+
+    /// Updates the bypass state of the audio unit.
+    public func setBypass(_ bypass: Bool) {
+        _effect.bypass = bypass
+    }
+}
diff --git a/just_audio/ios/Classes/AudioPlayer.h b/just_audio/ios/Classes/AudioPlayer.h
deleted file mode 100644
index 7a278dbf4..000000000
--- a/just_audio/ios/Classes/AudioPlayer.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#import <Flutter/Flutter.h>
-#import <AVFoundation/AVFoundation.h>
-
-@interface AudioPlayer : NSObject<AVPlayerItemMetadataOutputPushDelegate>
-
-@property (readonly, nonatomic) AVQueuePlayer *player;
-@property (readonly, nonatomic) float speed;
-
-- (instancetype)initWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar playerId:(NSString*)idParam loadConfiguration:(NSDictionary *)loadConfiguration;
-- (void)dispose;
-
-@end
-
-enum ProcessingState {
-	none,
-	loading,
-	buffering,
-	ready,
-	completed
-};
-
-enum LoopMode {
-	loopOff,
-	loopOne,
-	loopAll
-};
diff --git a/just_audio/ios/Classes/AudioPlayer.m b/just_audio/ios/Classes/AudioPlayer.m
deleted file mode 120000
index 596ca1d0d..000000000
--- a/just_audio/ios/Classes/AudioPlayer.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/AudioPlayer.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/AudioSequence/AudioSequence.swift b/just_audio/ios/Classes/AudioSequence/AudioSequence.swift
new file mode 100644
index 000000000..2eb3df2ea
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSequence/AudioSequence.swift
@@ -0,0 +1,24 @@
+//
+// AudioSequence.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+/**
+ Base class to represent an audio file wrapper
+ All audio file wrapper must have at least one audio source, and allow to set a shuffle order
+ */
+public protocol AudioSequence {
+    /// The list of audios that this AudioSequence contains
+    var sequence: [AudioSource] { get set }
+
+    /// Which audio source of the sequence is currently being played
+    var currentSequenceIndex: Int? { get set }
+
+    /**
+     The order in which the `sequence` should be played.
+     A shuffle action would change this array
+     */
+    var playbackOrder: [Int] { get set }
+}
diff --git a/just_audio/ios/Classes/AudioSequence/ConcatenatingAudioSequence.swift b/just_audio/ios/Classes/AudioSequence/ConcatenatingAudioSequence.swift
new file mode 100644
index 000000000..c2ee94d35
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSequence/ConcatenatingAudioSequence.swift
@@ -0,0 +1,26 @@
+//
+// ConcatenatingAudioSequence.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSequence` that holds a list of `IndexedAudioSequence`, may represents a playlist of songs
+ */
+public class ConcatenatingAudioSequence: AudioSequence {
+    public var sequence: [AudioSource] = []
+
+    public var currentSequenceIndex: Int?
+
+    public var playbackOrder: [Int] = []
+
+    func concatenatingInsertAll(at _: Int, sources _: [AudioSequence], shuffleIndexes _: [Int]) {}
+    func concatenatingRemoveRange(from _: Int, to _: Int, shuffleIndexes _: [Int]) {}
+
+    public init(with audioSources: [AudioSource]) {
+        sequence = audioSources
+        playbackOrder = audioSources.indices.map { $0 }
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSequence/IndexedAudioSequence.swift b/just_audio/ios/Classes/AudioSequence/IndexedAudioSequence.swift
new file mode 100644
index 000000000..f96f61015
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSequence/IndexedAudioSequence.swift
@@ -0,0 +1,56 @@
+//
+// IndexedAudioSequence.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSequence` that can appear in a sequence. Represents a single audio file (naming is inherited from `just_audio` plugin)
+ */
+public class IndexedAudioSequence: AudioSequence {
+    private var onlySequenceIndex: Int?
+
+    public var currentSequenceIndex: Int? {
+        get {
+            return onlySequenceIndex
+        }
+
+        set(value) {
+            if value != nil {
+                onlySequenceIndex = 0
+            } else {
+                onlySequenceIndex = nil
+            }
+        }
+    }
+
+    public var playbackOrder: [Int] {
+        set {
+            // no op
+        }
+
+        get {
+            return [0]
+        }
+    }
+
+    public var sequence: [AudioSource] = []
+
+    public init(with singleAudioSource: AudioSource) {
+        sequence = [singleAudioSource]
+        playbackOrder = [0]
+    }
+
+    public var playingStatus: AudioSourcePlayingStatus {
+        return sequence[playbackOrder.first!].playingStatus
+    }
+
+    public func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws {
+        guard let sequenceIndex = currentSequenceIndex else {
+            throw InconsistentStateError(message: "Please set the current index before setting the playing status")
+        }
+        return try sequence[sequenceIndex].setPlayingStatus(nextStatus)
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSequenceQueueManager.swift b/just_audio/ios/Classes/AudioSequenceQueueManager.swift
new file mode 100644
index 000000000..bde6e54b5
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSequenceQueueManager.swift
@@ -0,0 +1,145 @@
+//
+// AudioSequenceQueueManager.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 02/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ Manages the order in which a queue of `AudioSequence` should be reproduced
+ */
+public class AudioSequenceQueueManager {
+    private var queue: [AudioSequence] = []
+
+    /**
+     Whether the `AudioSequence.playbackOrder` should be considered when accessing to `AudioSource`s
+     */
+    @Published public var shouldShuffle = false
+
+    public var count: Int {
+        return queue.reduce(0) { partialResult, sequence in
+            partialResult + sequence.sequence.count
+        }
+    }
+
+    public var first: AudioSource? {
+        // TODO: this should take in account the shuffle order
+        if queue.count > 0 {
+            if !shouldShuffle {
+                return queue[0].sequence.first
+            }
+
+            guard let audioSourceIndex = queue[0].playbackOrder.first else {
+                return nil
+            }
+
+            return queue[0].sequence[audioSourceIndex]
+        }
+
+        return nil
+    }
+
+    public init() {}
+
+    public func element(at index: Int) throws -> AudioSource {
+        var mutableIndex = index
+        var audioSequenceIndex = 0
+        var found = false
+        var audioSource: AudioSource?
+        while !found {
+            if !queue.indices.contains(audioSequenceIndex) {
+                throw QueueIndexOutOfBoundError(index: index, count: count)
+            }
+
+            let audioSequence = queue[audioSequenceIndex]
+
+            let audioSourceIndexExists: Bool = shouldShuffle
+                ? audioSequence.playbackOrder.contains(mutableIndex)
+                : audioSequence.sequence.indices.contains(mutableIndex)
+
+            if audioSourceIndexExists {
+                let audioSourceIndex = shouldShuffle
+                    ? audioSequence.playbackOrder[mutableIndex]
+                    : mutableIndex
+                audioSource = audioSequence.sequence[audioSourceIndex]
+                found = true
+            } else {
+                audioSequenceIndex += 1
+                mutableIndex -= audioSequence.sequence.count
+            }
+        }
+
+        guard let audioSource = audioSource else {
+            throw QueueIndexOutOfBoundError(index: index, count: count)
+        }
+
+        return audioSource
+    }
+
+    public func contains(_ index: Int) -> Bool {
+        do {
+            _ = try element(at: index)
+            return true
+        } catch {
+            return false
+        }
+    }
+
+    public func addAll(sources: [AudioSequence]) {
+        queue.append(contentsOf: sources)
+    }
+
+    public func clear() {
+        queue.removeAll()
+    }
+
+    public func remove(at index: Int) throws {
+        var mutableIndex = index
+        var audioSequenceIndex = 0
+        var removed = false
+        while !removed {
+            if !queue.indices.contains(audioSequenceIndex) {
+                throw QueueIndexOutOfBoundError(index: index, count: count)
+            }
+
+            var audioSequenceToUpdate = queue[audioSequenceIndex]
+
+            let audioSourceIndexExists: Bool = shouldShuffle
+                ? audioSequenceToUpdate.playbackOrder.contains(mutableIndex)
+                : audioSequenceToUpdate.sequence.indices.contains(mutableIndex)
+
+            if audioSourceIndexExists {
+                let audioSourceIndex = shouldShuffle
+                    ? audioSequenceToUpdate.playbackOrder[mutableIndex]
+                    : mutableIndex
+
+                let audioSource = audioSequenceToUpdate.sequence[audioSourceIndex]
+
+                if audioSource.playingStatus == .playing || audioSource.playingStatus == .buffering {
+                    throw CannotRemoveAudioSourceFromSequenceError(currentStatus: audioSource.playingStatus)
+                }
+
+                audioSequenceToUpdate.sequence.remove(at: mutableIndex)
+                removed = true
+            } else {
+                audioSequenceIndex += 1
+                mutableIndex -= audioSequenceToUpdate.sequence.count
+            }
+        }
+    }
+
+    public func shuffle(at index: Int, inOrder newOrder: [Int]) throws {
+        if !queue.indices.contains(index) {
+            throw QueueIndexOutOfBoundError(index: index, count: count)
+        }
+
+        var sequenceToUpdate = queue[index]
+
+        if sequenceToUpdate.sequence.count != newOrder.count {
+            throw InvalidShuffleSetError(targetedQueueCount: sequenceToUpdate.sequence.count)
+        }
+
+        sequenceToUpdate.playbackOrder = newOrder
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSource.h b/just_audio/ios/Classes/AudioSource.h
deleted file mode 100644
index 33641c614..000000000
--- a/just_audio/ios/Classes/AudioSource.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#import <Flutter/Flutter.h>
-
-@interface AudioSource : NSObject
-
-@property (readonly, nonatomic) NSString* sourceId;
-
-- (instancetype)initWithId:(NSString *)sid;
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex;
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches;
-- (NSArray<NSNumber *> *)getShuffleIndices;
-- (void)decodeShuffleOrder:(NSDictionary *)dict;
-
-@end
diff --git a/just_audio/ios/Classes/AudioSource.m b/just_audio/ios/Classes/AudioSource.m
deleted file mode 120000
index 16881d6f5..000000000
--- a/just_audio/ios/Classes/AudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/AudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/AudioSource/AudioSource.swift b/just_audio/ios/Classes/AudioSource/AudioSource.swift
new file mode 100644
index 000000000..48e21e7fa
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSource/AudioSource.swift
@@ -0,0 +1,31 @@
+//
+// AudioSource.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+public protocol AudioSource {
+    var audioUrl: URL? { get }
+
+    var playingStatus: AudioSourcePlayingStatus { get }
+
+    var isLocal: Bool { get }
+
+    var effects: [AudioEffect] { get }
+
+    /// Should enforce the correct flow of the status of a track
+    func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws
+}
+
+// MARK: - AudioSource extensions
+
+extension AudioSource {
+    var startingTime: Double {
+        guard let audioSource = self as? ClippingAudioSource else {
+            return 0
+        }
+        return audioSource.start
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSource/ClippingAudioSource.swift b/just_audio/ios/Classes/AudioSource/ClippingAudioSource.swift
new file mode 100644
index 000000000..b1273a253
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSource/ClippingAudioSource.swift
@@ -0,0 +1,48 @@
+//
+// ClippingAudioSource.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSource` that plays just part of itself
+ */
+public class ClippingAudioSource: AudioSource {
+    public private(set) var realAudioSource: AudioSource
+
+    public var effects: [AudioEffect]
+
+    public var isLocal: Bool {
+        return realAudioSource.isLocal
+    }
+
+    let start: Double
+    let end: Double
+
+    var duration: Double { end - start }
+
+    public var playingStatus: AudioSourcePlayingStatus {
+        realAudioSource.playingStatus
+    }
+
+    public var audioUrl: URL? {
+        realAudioSource.audioUrl
+    }
+
+    public init(with singleAudioSource: AudioSource, from: Double, to: Double, effects: [AudioEffect] = []) throws {
+        start = from
+        end = to
+
+        guard start < end else {
+            throw ClippingAudioStartEndError()
+        }
+        realAudioSource = singleAudioSource
+        self.effects = effects
+    }
+
+    public func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws {
+        try realAudioSource.setPlayingStatus(nextStatus)
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSource/LocalAudioSource.swift b/just_audio/ios/Classes/AudioSource/LocalAudioSource.swift
new file mode 100644
index 000000000..065afc1cb
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSource/LocalAudioSource.swift
@@ -0,0 +1,62 @@
+//
+// LocalAudioSource.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSource` that holds an audio file stored inside the local filesystem
+ It can be built with a string representing a full path to the audio file inside the local filesystem.
+ */
+public class LocalAudioSource: AudioSource {
+    public var playingStatus: AudioSourcePlayingStatus = .idle
+
+    public var effects: [AudioEffect]
+
+    public var isLocal: Bool {
+        return true
+    }
+
+    public var audioUrl: URL? {
+        return _audioUrl
+    }
+
+    private var _audioUrl: URL?
+
+    public init(at uri: String, effects: [AudioEffect] = []) {
+        _audioUrl = Bundle.main.url(forResource: uri, withExtension: "")
+        if _audioUrl == nil {
+            if uri.hasPrefix("ipod-library://") || uri.hasPrefix("file://") {
+                _audioUrl = URL(string: uri)
+            } else {
+                _audioUrl = URL(fileURLWithPath: uri)
+            }
+        }
+        self.effects = effects
+    }
+
+    public func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws {
+        switch playingStatus {
+        case .playing:
+            if nextStatus != .playing, nextStatus != .idle {
+                playingStatus = nextStatus
+            }
+        case .paused:
+            if nextStatus != .paused {
+                playingStatus = nextStatus
+            }
+        case .ended:
+            if nextStatus != .idle {
+                playingStatus = nextStatus
+            }
+        case .idle:
+            if nextStatus != .ended, nextStatus != .paused {
+                playingStatus = nextStatus
+            }
+        case .buffering:
+            playingStatus = .buffering
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSource/LoopingAudioSource.swift b/just_audio/ios/Classes/AudioSource/LoopingAudioSource.swift
new file mode 100644
index 000000000..a66c97d06
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSource/LoopingAudioSource.swift
@@ -0,0 +1,44 @@
+//
+// LoopingAudioSource.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSource` that loops for N times before being considered "finished"
+ */
+public class LoopingAudioSource: AudioSource {
+    public var effects: [AudioEffect]
+
+    /// The number of times this audio source should loop
+    let count: Int
+
+    /// The times that this track has been played.
+    public var playedTimes: Int = 0
+
+    public private(set) var realAudioSource: AudioSource
+
+    public var isLocal: Bool {
+        return realAudioSource.isLocal
+    }
+
+    public var playingStatus: AudioSourcePlayingStatus {
+        realAudioSource.playingStatus
+    }
+
+    public var audioUrl: URL? {
+        realAudioSource.audioUrl
+    }
+
+    public init(with singleAudioSource: AudioSource, count: Int, effects: [AudioEffect] = []) {
+        self.count = count
+        realAudioSource = singleAudioSource
+        self.effects = effects
+    }
+
+    public func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws {
+        try realAudioSource.setPlayingStatus(nextStatus)
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSource/RemoteAudioSource.swift b/just_audio/ios/Classes/AudioSource/RemoteAudioSource.swift
new file mode 100644
index 000000000..00fe1551c
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSource/RemoteAudioSource.swift
@@ -0,0 +1,53 @@
+//
+// RemoteAudioSource.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ An `AudioSource` the holds a single audio stream
+ */
+public class RemoteAudioSource: AudioSource {
+    public var effects: [AudioEffect]
+
+    public var playingStatus: AudioSourcePlayingStatus = .idle
+
+    public var isLocal: Bool {
+        return false
+    }
+
+    public private(set) var audioUrl: URL?
+
+    public init(at uri: String, effects: [AudioEffect] = []) {
+        audioUrl = URL(string: uri)
+        self.effects = effects
+    }
+
+    /// Enforces the correct flow of the status of a track
+    public func setPlayingStatus(_ nextStatus: AudioSourcePlayingStatus) throws {
+        switch playingStatus {
+        case .playing:
+            if nextStatus != .playing, nextStatus != .idle {
+                playingStatus = nextStatus
+            }
+        case .paused:
+            if nextStatus != .paused {
+                playingStatus = nextStatus
+            }
+        case .buffering:
+            if nextStatus != .ended {
+                playingStatus = nextStatus
+            }
+        case .ended:
+            if nextStatus != .idle {
+                playingStatus = nextStatus
+            }
+        case .idle:
+            if nextStatus != .ended, nextStatus != .paused {
+                playingStatus = nextStatus
+            }
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/AudioSourcePlayingStatus.swift b/just_audio/ios/Classes/AudioSourcePlayingStatus.swift
new file mode 100644
index 000000000..6032b6b66
--- /dev/null
+++ b/just_audio/ios/Classes/AudioSourcePlayingStatus.swift
@@ -0,0 +1,28 @@
+//
+// AudioSourcePlayingStatus.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+public enum AudioSourcePlayingStatus {
+    case playing
+    case paused
+    case buffering
+    case ended
+    case idle
+
+    static func fromSAPlayingStatus(_ playingStatus: SAPlayingStatus) -> AudioSourcePlayingStatus {
+        switch playingStatus {
+        case .playing:
+            return .playing
+        case .paused:
+            return .paused
+        case .buffering:
+            return .buffering
+        case .ended:
+            return .ended
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/BetterEventChannel.h b/just_audio/ios/Classes/BetterEventChannel.h
deleted file mode 100644
index d20ea2e16..000000000
--- a/just_audio/ios/Classes/BetterEventChannel.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#import <Flutter/Flutter.h>
-
-@interface BetterEventChannel : NSObject<FlutterStreamHandler>
-
-- (instancetype)initWithName:(NSString*)name messenger:(NSObject<FlutterBinaryMessenger> *)messenger;
-- (void)sendEvent:(id)event;
-- (void)dispose;
-
-@end
diff --git a/just_audio/ios/Classes/BetterEventChannel.m b/just_audio/ios/Classes/BetterEventChannel.m
deleted file mode 120000
index e43a7141c..000000000
--- a/just_audio/ios/Classes/BetterEventChannel.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/BetterEventChannel.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/BetterEventChannel.swift b/just_audio/ios/Classes/BetterEventChannel.swift
new file mode 100644
index 000000000..774f0d702
--- /dev/null
+++ b/just_audio/ios/Classes/BetterEventChannel.swift
@@ -0,0 +1,30 @@
+import Flutter
+
+class BetterEventChannel: NSObject, FlutterStreamHandler {
+    let eventChannel: FlutterEventChannel
+    var eventSink: FlutterEventSink?
+
+    init(name: String, messenger: FlutterBinaryMessenger) {
+        eventChannel = FlutterEventChannel(name: name, binaryMessenger: messenger)
+        super.init()
+        eventChannel.setStreamHandler(self)
+    }
+
+    func onListen(withArguments _: Any?, eventSink events: @escaping FlutterEventSink) -> FlutterError? {
+        eventSink = events
+        return nil
+    }
+
+    func onCancel(withArguments _: Any?) -> FlutterError? {
+        eventSink = nil
+        return nil
+    }
+
+    func sendEvent(_ event: Any) {
+        eventSink?(event)
+    }
+
+    func dispose() {
+        eventChannel.setStreamHandler(nil)
+    }
+}
diff --git a/just_audio/ios/Classes/ClippingAudioSource.h b/just_audio/ios/Classes/ClippingAudioSource.h
deleted file mode 100644
index 127019e17..000000000
--- a/just_audio/ios/Classes/ClippingAudioSource.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#import "AudioSource.h"
-#import "UriAudioSource.h"
-#import <Flutter/Flutter.h>
-
-@interface ClippingAudioSource : IndexedAudioSource
-
-@property (readonly, nonatomic) UriAudioSource* audioSource;
-
-- (instancetype)initWithId:(NSString *)sid audioSource:(UriAudioSource *)audioSource start:(NSNumber *)start end:(NSNumber *)end;
-
-@end
diff --git a/just_audio/ios/Classes/ClippingAudioSource.m b/just_audio/ios/Classes/ClippingAudioSource.m
deleted file mode 120000
index d561b1e0e..000000000
--- a/just_audio/ios/Classes/ClippingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/ClippingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/Commands.swift b/just_audio/ios/Classes/Commands.swift
new file mode 100644
index 000000000..bdc7a1484
--- /dev/null
+++ b/just_audio/ios/Classes/Commands.swift
@@ -0,0 +1,64 @@
+//
+//  SwiftPlayerCommand.swift
+//  just_audio
+//
+//  Created by Mac on 22/09/22.
+//
+
+/**
+  Commands used to orchestrate requests to
+  - instantiate a new player
+  - dispose a player
+  - dispose all players
+  between Flutter/Dart and iOS layers
+ */
+enum SwiftJustAudioPluginCommand: String {
+    case `init` // TODO: should be "create", init comes from dart, and is a keyword in swift
+    case disposePlayer
+    case disposeAllPlayers
+
+    static func parse(_ value: String) -> SwiftJustAudioPluginCommand {
+        return SwiftJustAudioPluginCommand(rawValue: value)!
+    }
+}
+
+/**
+  Commands used to orchestrate requests to a single player between Flutter/Dart and iOS layers
+ */
+enum SwiftPlayerCommand: String {
+    case load
+    case play
+    case pause
+    case seek
+    case setVolume
+    case setSpeed
+    case setPitch
+    case setSkipSilence
+    case setLoopMode
+    case setShuffleMode
+    case setShuffleOrder
+    case setAutomaticallyWaitsToMinimizeStalling
+    case setCanUseNetworkResourcesForLiveStreamingWhilePaused
+    case setPreferredPeakBitRate
+    case dispose
+    case concatenatingInsertAll
+    case concatenatingRemoveRange
+    case concatenatingMove
+    case audioEffectSetEnabled
+    case darwinEqualizerBandSetGain
+    case darwinWriteOutputToFile
+    case darwinStopWriteOutputToFile
+    case darwinDelaySetTargetDelayTime
+    case darwinDelaySetTargetFeedback
+    case darwinDelaySetLowPassCutoff
+    case darwinDelaySetWetDryMix
+    case darwinDistortionSetWetDryMix
+    case darwinDistortionSetPreGain
+    case darwinDistortionSetPreset
+    case darwinReverbSetPreset
+    case darwinReverbSetWetDryMix
+
+    static func parse(_ value: String) throws -> SwiftPlayerCommand {
+        return SwiftPlayerCommand(rawValue: value)!
+    }
+}
diff --git a/just_audio/ios/Classes/ConcatenatingAudioSource.h b/just_audio/ios/Classes/ConcatenatingAudioSource.h
deleted file mode 100644
index 9d9bf44a3..000000000
--- a/just_audio/ios/Classes/ConcatenatingAudioSource.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#import "AudioSource.h"
-#import <Flutter/Flutter.h>
-
-@interface ConcatenatingAudioSource : AudioSource
-
-@property (readonly, nonatomic) int count;
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSMutableArray<AudioSource *> *)audioSources shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder;
-- (void)insertSource:(AudioSource *)audioSource atIndex:(int)index;
-- (void)removeSourcesFromIndex:(int)start toIndex:(int)end;
-- (void)moveSourceFromIndex:(int)currentIndex toIndex:(int)newIndex;
-- (void)setShuffleOrder:(NSArray<NSNumber *> *)shuffleOrder;
-
-@end
diff --git a/just_audio/ios/Classes/ConcatenatingAudioSource.m b/just_audio/ios/Classes/ConcatenatingAudioSource.m
deleted file mode 120000
index 1e2adbb70..000000000
--- a/just_audio/ios/Classes/ConcatenatingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/ConcatenatingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/Equalizer/Equalizer.swift b/just_audio/ios/Classes/Equalizer/Equalizer.swift
new file mode 100644
index 000000000..600658394
--- /dev/null
+++ b/just_audio/ios/Classes/Equalizer/Equalizer.swift
@@ -0,0 +1,80 @@
+//
+// JustAudioPlayer.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFoundation
+
+public typealias PreSet = [Float]
+
+private func equalizerNodeBuilder(frequencies: [Int]) -> AVAudioUnitEQ {
+    let node = AVAudioUnitEQ(numberOfBands: frequencies.count)
+    node.globalGain = 1
+    for i in 0 ... (node.bands.count - 1) {
+        node.bands[i].frequency = Float(frequencies[i])
+        node.bands[i].gain = 0
+        node.bands[i].filterType = .parametric
+    }
+
+    return node
+}
+
+public class Equalizer {
+    public private(set) var frequencies: [Int]
+    public private(set) var preSets: [PreSet] = []
+    public private(set) var activePreset: PreSet?
+
+    public static let defaultFrequencies = [32, 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000]
+
+    public private(set) var node: AVAudioUnitEQ
+
+    public init(frequencies: [Int] = defaultFrequencies, preSets: [PreSet] = []) throws {
+        self.frequencies = frequencies
+        node = equalizerNodeBuilder(frequencies: frequencies)
+        try setPreSets(preSets)
+    }
+
+    public func setPreSets(_ preSets: [PreSet]) throws {
+        for preSet in preSets {
+            if preSet.count != frequencies.count {
+                throw WrongPreSetForFrequencesError(preSet: preSet, frequencies: frequencies)
+            }
+        }
+
+        self.preSets = preSets
+    }
+
+    public func activate(preset index: Int) throws {
+        if !preSets.indices.contains(index) {
+            throw PreSetNotFoundError(index, currentList: preSets)
+        }
+
+        let preset = preSets[index]
+
+        for i in 0 ... (node.bands.count - 1) {
+            node.bands[i].bypass = false
+            node.bands[i].gain = preset[i]
+        }
+
+        activePreset = preset
+    }
+
+    public func resetGains() {
+        for i in 0 ... (node.bands.count - 1) {
+            node.bands[i].bypass = true
+            node.bands[i].gain = 0
+        }
+        activePreset = nil
+    }
+
+    public func tweakBandGain(band index: Int, gain value: Float) throws {
+        if !node.bands.indices.contains(index) {
+            throw BandNotFoundError(bandIndex: index, bandsCount: node.bands.count)
+        }
+
+        node.bands[index].gain = value
+    }
+}
diff --git a/just_audio/ios/Classes/Error/AlreadyHasEqualizerError.swift b/just_audio/ios/Classes/Error/AlreadyHasEqualizerError.swift
new file mode 100644
index 000000000..662afa5de
--- /dev/null
+++ b/just_audio/ios/Classes/Error/AlreadyHasEqualizerError.swift
@@ -0,0 +1,12 @@
+//
+// AlreadyHasEqualizerError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 11/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to set an equalizer before calling the stop player method
+ */
+public class AlreadyHasEqualizerError: JustAudioPlayerError {}
diff --git a/just_audio/ios/Classes/Error/BadPlayingStatusError.swift b/just_audio/ios/Classes/Error/BadPlayingStatusError.swift
new file mode 100644
index 000000000..6d7a42c97
--- /dev/null
+++ b/just_audio/ios/Classes/Error/BadPlayingStatusError.swift
@@ -0,0 +1,23 @@
+//
+// BadPlayingStatusError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * The given playing status for `AudioSource` is not valid
+ */
+public class BadPlayingStatusError: JustAudioPlayerError {
+    public let value: AudioSourcePlayingStatus
+
+    init(value: AudioSourcePlayingStatus) {
+        self.value = value
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Playing status \(value) not valid for audio source"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/BandNotFoundError.swift b/just_audio/ios/Classes/Error/BandNotFoundError.swift
new file mode 100644
index 000000000..7f302940b
--- /dev/null
+++ b/just_audio/ios/Classes/Error/BandNotFoundError.swift
@@ -0,0 +1,25 @@
+//
+// BandNotFoundError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 08/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to update the value of a non-existent equalizer band
+ */
+public class BandNotFoundError: JustAudioPlayerError {
+    public let bandIndex: Int
+    public let bandsCount: Int
+
+    init(bandIndex: Int, bandsCount: Int) {
+        self.bandIndex = bandIndex
+        self.bandsCount = bandsCount
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Trying to update a non existent band \(bandIndex). Current bands count \(bandsCount)"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/BaseError.swift b/just_audio/ios/Classes/Error/BaseError.swift
new file mode 100644
index 000000000..6093140fe
--- /dev/null
+++ b/just_audio/ios/Classes/Error/BaseError.swift
@@ -0,0 +1,73 @@
+//
+//  BaseError.swift
+//  kMusicSwift
+//
+//  Created by kuama on 29/08/22.
+//
+
+import Foundation
+
+/**
+ * Base class for errors
+ */
+open class BaseError: Error, CustomStringConvertible, CustomDebugStringConvertible {
+    open var baseDescription: String { "\(type(of: self))" }
+
+    /// The error description
+    public var description: String {
+        var description = baseDescription
+
+        if let message = message {
+            description += ": " + message
+        }
+
+        if let cause = cause {
+            description += ", cause: \(cause)"
+        }
+
+        return description
+    }
+
+    /// The debug description
+    public var debugDescription: String {
+        var description = baseDescription
+
+        if let message = message {
+            description += ": " + message
+        }
+
+        if let cause = cause {
+            description += ", cause: \(String(reflecting: cause))"
+        }
+
+        return description
+    }
+
+    /// The error message
+    public let message: String?
+    /// The error cause
+    public let cause: Error?
+
+    /**
+     * Initialize `BaseError`
+     *
+     * - Parameter message: the error message.
+     * - Parameter cause: the error cause.
+     */
+    public init(message: String? = nil, cause: Error? = nil) {
+        self.message = message
+        self.cause = cause
+    }
+
+    /**
+     * Forces a cast to `BaseError`
+     *
+     * - Parameter error: the given error.
+     */
+    public static func fromError(_ error: Error) -> Self {
+        guard let convertedError = error as? Self else {
+            fatalError("Cannot force-convert \(error.self) to \(self))")
+        }
+        return convertedError
+    }
+}
diff --git a/just_audio/ios/Classes/Error/CannotFindAudioModifier.swift b/just_audio/ios/Classes/Error/CannotFindAudioModifier.swift
new file mode 100644
index 000000000..f08cc6542
--- /dev/null
+++ b/just_audio/ios/Classes/Error/CannotFindAudioModifier.swift
@@ -0,0 +1,13 @@
+//
+//  CannotFindAudioModifier.swift
+//  kMusicSwift
+//
+//  Created by kuama on 12/09/22.
+//
+
+import Foundation
+
+/**
+ * Thrown when trying to retrieve the first audio modifier
+ */
+public class CannotFindAudioModifier: JustAudioPlayerError {}
diff --git a/just_audio/ios/Classes/Error/CannotRemoveAudioSourceFromSequenceError.swift b/just_audio/ios/Classes/Error/CannotRemoveAudioSourceFromSequenceError.swift
new file mode 100644
index 000000000..4bf1458fa
--- /dev/null
+++ b/just_audio/ios/Classes/Error/CannotRemoveAudioSourceFromSequenceError.swift
@@ -0,0 +1,23 @@
+//
+// CannotRemoveAudioSourceFromSequenceError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 02/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to remove an `AudioSource` that is playing or buffering
+ */
+public class CannotRemoveAudioSourceFromSequenceError: JustAudioPlayerError {
+    public let currentStatus: AudioSourcePlayingStatus
+
+    init(currentStatus: AudioSourcePlayingStatus) {
+        self.currentStatus = currentStatus
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "AudioSources with playing status \(currentStatus) cannot be removed"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/ClippingAudioStartEndError.swift b/just_audio/ios/Classes/Error/ClippingAudioStartEndError.swift
new file mode 100644
index 000000000..ffe6dd8c1
--- /dev/null
+++ b/just_audio/ios/Classes/Error/ClippingAudioStartEndError.swift
@@ -0,0 +1,17 @@
+//
+//  ClippingAudioStartEndError.swift
+//  kMusicSwift
+//
+//  Created by kuama on 05/09/22.
+//
+
+import Foundation
+
+/**
+ * Thrown when trying to create a `ClippingAudioSource` with inconsistent start / end values
+ */
+public class ClippingAudioStartEndError: JustAudioPlayerError {
+    override public var baseDescription: String {
+        "End must be greater than start"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/CouldNotCreateOutputFileError.swift b/just_audio/ios/Classes/Error/CouldNotCreateOutputFileError.swift
new file mode 100644
index 000000000..65e2b61a3
--- /dev/null
+++ b/just_audio/ios/Classes/Error/CouldNotCreateOutputFileError.swift
@@ -0,0 +1,12 @@
+//
+// CouldNotCreateOutputFileError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 11/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ Thrown when trying to create an output file for the player leads to an error
+ */
+public class CouldNotCreateOutputFileError: JustAudioPlayerError {}
diff --git a/just_audio/ios/Classes/Error/InconsistentStateError.swift b/just_audio/ios/Classes/Error/InconsistentStateError.swift
new file mode 100644
index 000000000..370c3a7fb
--- /dev/null
+++ b/just_audio/ios/Classes/Error/InconsistentStateError.swift
@@ -0,0 +1,12 @@
+//
+// InconsistentStateError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ Basically a WTF
+ */
+public class InconsistentStateError: JustAudioPlayerError {}
diff --git a/just_audio/ios/Classes/Error/InvalidShuffleSetError.swift b/just_audio/ios/Classes/Error/InvalidShuffleSetError.swift
new file mode 100644
index 000000000..3d31eebeb
--- /dev/null
+++ b/just_audio/ios/Classes/Error/InvalidShuffleSetError.swift
@@ -0,0 +1,23 @@
+//
+// InvalidShuffleSetError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 05/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to shuffle a queue with an invalid shuffle array
+ */
+public class InvalidShuffleSetError: JustAudioPlayerError {
+    public let targetedQueueCount: Int
+
+    init(targetedQueueCount: Int) {
+        self.targetedQueueCount = targetedQueueCount
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "The shuffle array provided has incorrect count. The targeted queue has \(targetedQueueCount) elements"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/JustAudioPlayerError.swift b/just_audio/ios/Classes/Error/JustAudioPlayerError.swift
new file mode 100644
index 000000000..1782b0cec
--- /dev/null
+++ b/just_audio/ios/Classes/Error/JustAudioPlayerError.swift
@@ -0,0 +1,8 @@
+//
+//  JustAudioPlayerError.swift
+//  kMusicSwift
+//
+//  Created by Mac on 26/08/22.
+//
+// TODO: map exiting errors
+public class JustAudioPlayerError: BaseError {}
diff --git a/just_audio/ios/Classes/Error/MissingEqualizerError.swift b/just_audio/ios/Classes/Error/MissingEqualizerError.swift
new file mode 100644
index 000000000..d8d52d2a2
--- /dev/null
+++ b/just_audio/ios/Classes/Error/MissingEqualizerError.swift
@@ -0,0 +1,12 @@
+//
+// MissingEqualizerError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 11/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to interact with an equalizer without having setted one before
+ */
+public class MissingEqualizerError: JustAudioPlayerError {}
diff --git a/just_audio/ios/Classes/Error/PreSetNotFoundError.swift b/just_audio/ios/Classes/Error/PreSetNotFoundError.swift
new file mode 100644
index 000000000..06633f4ed
--- /dev/null
+++ b/just_audio/ios/Classes/Error/PreSetNotFoundError.swift
@@ -0,0 +1,25 @@
+//
+// PreSetNotFoundError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 08/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to access to a preset with out of bounds index
+ */
+public class PreSetNotFoundError: JustAudioPlayerError {
+    public let presetIndex: Int
+    public let currentList: [PreSet]
+
+    init(_ presetIndex: Int, currentList: [PreSet]) {
+        self.presetIndex = presetIndex
+        self.currentList = currentList
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Trying to access a preset with wrong index: \(presetIndex). Current preSet list: \(currentList)"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/QueueIndexOutOfBoundError.swift b/just_audio/ios/Classes/Error/QueueIndexOutOfBoundError.swift
new file mode 100644
index 000000000..d2ea81ee4
--- /dev/null
+++ b/just_audio/ios/Classes/Error/QueueIndexOutOfBoundError.swift
@@ -0,0 +1,25 @@
+//
+// QueueIndexOutOfBoundError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 02/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * Thrown when trying to access an `AudioSource` with a wrong index
+ */
+public class QueueIndexOutOfBoundError: JustAudioPlayerError {
+    public let count: Int
+    public let index: Int
+
+    init(index: Int, count: Int) {
+        self.count = count
+        self.index = index
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Requested index (\(index)) is missing. Total queue count is \(count)"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/SpeedValueNotValidError.swift b/just_audio/ios/Classes/Error/SpeedValueNotValidError.swift
new file mode 100644
index 000000000..5f99d0fe5
--- /dev/null
+++ b/just_audio/ios/Classes/Error/SpeedValueNotValidError.swift
@@ -0,0 +1,24 @@
+//
+//  SpeedValueNotValidError.swift
+//  kMusicSwift
+//
+//  Created by kuama on 12/09/22.
+//
+
+import Foundation
+
+/**
+ * Thrown when the given value for volume is not valid
+ */
+public class SpeedValueNotValidError: JustAudioPlayerError {
+    public let value: Float
+
+    init(value: Float) {
+        self.value = value
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Volume not valid: \(value.description), possible range between 0.0 and 32.0"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/VolumeValueNotValidError.swift b/just_audio/ios/Classes/Error/VolumeValueNotValidError.swift
new file mode 100644
index 000000000..a8486b3e6
--- /dev/null
+++ b/just_audio/ios/Classes/Error/VolumeValueNotValidError.swift
@@ -0,0 +1,22 @@
+//
+//  VolumeValueNotValidError.swift
+//  kMusicSwift
+//
+//  Created by kuama on 29/08/22.
+//
+
+/**
+ * Thrown when the given value for volume is not valid
+ */
+public class VolumeValueNotValidError: JustAudioPlayerError {
+    public let value: Float
+
+    init(value: Float) {
+        self.value = value
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Volume not valid: \(value.description), possible range between 0.0 and 1.0"
+    }
+}
diff --git a/just_audio/ios/Classes/Error/WrongPreSetForFrequencesError.swift b/just_audio/ios/Classes/Error/WrongPreSetForFrequencesError.swift
new file mode 100644
index 000000000..57539001c
--- /dev/null
+++ b/just_audio/ios/Classes/Error/WrongPreSetForFrequencesError.swift
@@ -0,0 +1,25 @@
+//
+// WrongPreSetForFrequencesError.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 08/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+/**
+ * The given preset does not have same elements count of the initial frequencies
+ */
+public class WrongPreSetForFrequencesError: JustAudioPlayerError {
+    public let preSet: PreSet
+    public let frequencies: [Int]
+
+    init(preSet: PreSet, frequencies: [Int]) {
+        self.preSet = preSet
+        self.frequencies = frequencies
+        super.init()
+    }
+
+    override public var baseDescription: String {
+        "Trying to provide an invalid preset \(preSet) for frequencies \(frequencies)"
+    }
+}
diff --git a/just_audio/ios/Classes/IndexedAudioSource.h b/just_audio/ios/Classes/IndexedAudioSource.h
deleted file mode 100644
index 6842ab63b..000000000
--- a/just_audio/ios/Classes/IndexedAudioSource.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#import "AudioSource.h"
-#import "IndexedPlayerItem.h"
-#import <Flutter/Flutter.h>
-#import <AVFoundation/AVFoundation.h>
-
-@interface IndexedAudioSource : AudioSource
-
-@property (readonly, nonatomic) IndexedPlayerItem *playerItem;
-@property (readonly, nonatomic) IndexedPlayerItem *playerItem2;
-@property (readwrite, nonatomic) CMTime duration;
-@property (readonly, nonatomic) CMTime position;
-@property (readonly, nonatomic) CMTime bufferedPosition;
-@property (readonly, nonatomic) BOOL isAttached;
-
-- (void)onStatusChanged:(AVPlayerItemStatus)status;
-- (void)attach:(AVQueuePlayer *)player initialPos:(CMTime)initialPos;
-- (void)play:(AVQueuePlayer *)player;
-- (void)pause:(AVQueuePlayer *)player;
-- (void)stop:(AVQueuePlayer *)player;
-- (void)seek:(CMTime)position;
-- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler;
-- (void)preparePlayerItem2;
-- (void)flip;
-- (void)applyPreferredForwardBufferDuration;
-- (void)applyCanUseNetworkResourcesForLiveStreamingWhilePaused;
-- (void)applyPreferredPeakBitRate;
-
-@end
diff --git a/just_audio/ios/Classes/IndexedAudioSource.m b/just_audio/ios/Classes/IndexedAudioSource.m
deleted file mode 120000
index 051d5041c..000000000
--- a/just_audio/ios/Classes/IndexedAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/IndexedAudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/IndexedPlayerItem.h b/just_audio/ios/Classes/IndexedPlayerItem.h
deleted file mode 100644
index 8a86a94d4..000000000
--- a/just_audio/ios/Classes/IndexedPlayerItem.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#import <AVFoundation/AVFoundation.h>
-
-@class IndexedAudioSource;
-
-@interface IndexedPlayerItem : AVPlayerItem
-
-@property (readwrite, nonatomic, weak) IndexedAudioSource *audioSource;
-
-@end
diff --git a/just_audio/ios/Classes/IndexedPlayerItem.m b/just_audio/ios/Classes/IndexedPlayerItem.m
deleted file mode 120000
index 04e55fc54..000000000
--- a/just_audio/ios/Classes/IndexedPlayerItem.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/IndexedPlayerItem.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/JustAudioPlayer.swift b/just_audio/ios/Classes/JustAudioPlayer.swift
new file mode 100644
index 000000000..5f79cd4e0
--- /dev/null
+++ b/just_audio/ios/Classes/JustAudioPlayer.swift
@@ -0,0 +1,769 @@
+//
+// JustAudioPlayer.swift
+// kMusicSwift
+// Created by Kuama Dev Team on 01/09/22
+// Using Swift 5.0
+// Running on macOS 12.5
+//
+
+import AVFoundation
+import Combine
+import Darwin
+import Foundation
+
+public enum LoopMode {
+    case off
+    case one
+    case all
+}
+
+/// Enumerates the different processing states of a player.
+public enum ProcessingState {
+    case none
+    case loading
+    case buffering
+    case ready
+    case completed
+}
+
+@available(iOS 13.0, *)
+public class JustAudioPlayer {
+    /**
+     * Represents the time that must elapse before choose to restart a song or seek to the previous one.
+     * Expressed in seconds
+     */
+    private static let ELAPSED_TIME_TO_RESTART_A_SONG = 5.0
+
+    // MARK: - Event Streams
+
+    /// whether we're currently playing a song
+    @Published public private(set) var isPlaying: Bool = false
+
+    /// the current loop mode
+    @Published public private(set) var loopMode: LoopMode = .off
+
+    /// player node volume value
+    @Published public private(set) var volume: Float?
+
+    /// player node speed
+    @Published public private(set) var speed: Float?
+
+    /// buffer duration
+    @Published public private(set) var bufferPosition: Double?
+
+    /// track duration
+    @Published public private(set) var duration: Double?
+
+    /// processing state
+    @Published public private(set) var processingState: ProcessingState = .none
+
+    /// elapsed time
+    @Published public private(set) var elapsedTime: Double?
+
+    /// tracks which track is being reproduced (currentIndexStream)
+    @Published public private(set) var queueIndex: Int?
+
+    /// equalizer node, allows to provide presets
+    @Published public private(set) var equalizer: Equalizer?
+
+    /// any errors occurred while writing the output file will be published here
+    @Published public private(set) var outputWriteError: Error?
+
+    /// the full path to the output file
+    @Published public private(set) var outputAbsolutePath: String?
+
+    @Published public private(set) var globalEffects: [AudioEffect] = []
+
+    /// Whether the tracks in the queue are played in shuffled order
+    public var isShuffling: Published<Bool>.Publisher {
+        queueManager.$shouldShuffle
+    }
+
+    private var engine: AVAudioEngine!
+
+    private var mainPlayer: SAPlayer!
+
+    // MARK: - Http headers
+
+    /**
+     * Allows to set the http headers of the request that the player internally does to retrieve a stream or a single audio.
+     * These headers are unique for player, and will be shared for all of the queued `AudioSource`
+     */
+    var httpHeaders: [String: String] = [:] {
+        didSet {
+            mainPlayer.HTTPHeaderFields = httpHeaders
+        }
+    }
+
+    // MARK: - Internal state
+
+    private var queueManager = AudioSequenceQueueManager()
+
+    // MARK: - Notification subscriptions
+
+    private var playingStatusSubscription: UInt?
+    private var elapsedTimeSubscription: UInt?
+    private var durationSubscription: UInt?
+    private var streamingBufferSubscription: UInt?
+
+    // MARK: - Constructor
+
+    /// pass the same engine to different instance of `JustAudioPlayer` to play more track all together and handle actions and streams of the single track
+    public init(engine: AVAudioEngine = AVAudioEngine()) {
+        self.engine = engine
+        mainPlayer = SAPlayer(engine: engine)
+        subscribeToAllSubscriptions()
+    }
+
+    // MARK: - Public API
+
+    public func addAudioSource(_ sequence: AudioSequence) {
+        queueManager.addAll(sources: [sequence])
+        processingState = .ready
+    }
+
+    public func removeAudioSource(at index: Int) throws {
+        try queueManager.remove(at: index)
+        processingState = .ready
+    }
+
+    public func addAudioEffect(_ audioEffect: AudioEffect) {
+        globalEffects.append(audioEffect)
+    }
+
+    public func removeAudioEffect(_ audioEffect: AudioEffect) {
+        globalEffects.removeAll { toBeChecked in
+            toBeChecked.effect == audioEffect.effect
+        }
+    }
+
+    public func clearAudioEffects() {
+        globalEffects.removeAll()
+    }
+
+    /**
+     * Starts to play the current queue of the player
+     * If the player is already playing, calling this method will result in a no-op
+     */
+    public func play() throws {
+        guard let node = mainPlayer.playerNode else {
+            try scheduleAudioSource()
+            return
+        }
+
+        if node.isPlaying {
+            return
+        } else if processingState == .completed {
+            try scheduleAudioSource()
+        } else {
+            // player node is in pause
+            processingState = .loading
+            isPlaying = false
+            mainPlayer.play()
+        }
+    }
+
+    /**
+     * Pause the player, but keeps it ready to play (`queue` will not be dropped, `queueIndex` will not change)
+     */
+    public func pause() {
+        mainPlayer.pause()
+        processingState = .ready
+        isPlaying = false
+    }
+
+    /**
+     * Stops the player, looses the queue and the current index
+     */
+    public func stop() {
+        processingState = .none
+        mainPlayer.stopStreamingRemoteAudio()
+        mainPlayer.playerNode?.stop()
+        engine.stop()
+        queueManager.clear()
+        queueIndex = 0
+        unsubscribeUpdates()
+        equalizer = nil
+        isPlaying = false
+    }
+
+    /// seek to a determinate value, default is 10 second forward
+    public func seek(second: Double = 10.0, index: Int? = nil) {
+        if let nextTrackIndex = index, queueIndex != index {
+            do {
+                if let track = try tryMoveToTrack(index: nextTrackIndex) {
+                    processingState = .loading
+                    play(track: track)
+                }
+            } catch {
+                print("Ignoring seek to \(nextTrackIndex) since no such index exists inside the queue")
+            }
+
+            return
+        }
+        mainPlayer.seekTo(seconds: second)
+        processingState = .ready
+    }
+
+    /// Skip to the next item
+    public func seekToNext() throws {
+        if let track = try tryMoveToNextTrack(isForced: true) {
+            processingState = .loading
+            play(track: track)
+        }
+    }
+
+    /// Skip to the previous item
+    public func seekToPrevious() throws {
+        processingState = .loading
+        play(track: try tryMoveToPreviousTrack())
+    }
+
+    /// Toggles shuffle mode
+    public func setShuffleModeEnabled(_ shouldShuffle: Bool) {
+        queueManager.shouldShuffle = shouldShuffle
+    }
+
+    /// Sets a shuffle playback order for a specific `AudioSequence` in the queue
+    public func shuffle(at index: Int, inOrder newOrder: [Int]) throws {
+        try queueManager.shuffle(at: index, inOrder: newOrder)
+    }
+
+    /**
+     * Sets the node speed
+     */
+    public func setSpeed(_ speed: Float) throws {
+        guard let node = mainPlayer.audioModifiers[0] as? AVAudioUnitTimePitch else {
+            throw CannotFindAudioModifier()
+        }
+        guard speed > 0.0, speed <= 32.0 else {
+            throw SpeedValueNotValidError(value: speed)
+        }
+        self.speed = speed
+        node.rate = speed
+        mainPlayer.playbackRateOfAudioChanged(rate: speed)
+    }
+
+    /**
+     * Sets the node volume
+     * N.B. it is the player node volume value, not the device's one
+     */
+    public func setVolume(_ volume: Float) throws {
+        guard volume >= 0.0 || volume <= 1.0 else {
+            throw VolumeValueNotValidError(value: volume)
+        }
+        self.volume = volume
+        mainPlayer.playerNode?.volume = volume
+    }
+
+    /**
+     * Sets the player loop mode.
+     * Warning: if one of the `AudioSources` in queue is a `LoopingAudioSource`, its "loop" will override the * * player loop
+     */
+    public func setLoopMode(_ loopMode: LoopMode) {
+        self.loopMode = loopMode
+    }
+
+    /**
+     * Sets the next loop mode. Allow the user to keep touching the same button to toggle between the different `LoopMode`s
+     */
+    public func setNextLoopMode() {
+        switch loopMode {
+        case .off:
+            loopMode = .one
+        case .one:
+            loopMode = .all
+        case .all:
+            loopMode = .off
+        }
+    }
+
+    // TODO:
+    public func setClip(start _: TimeInterval? = nil, end _: TimeInterval? = nil) {}
+
+    /**
+     * Allows to provide an equalizer to the player
+     */
+    public func setEqualizer(_ equalizer: Equalizer) throws {
+        guard self.equalizer == nil else {
+            throw AlreadyHasEqualizerError()
+        }
+
+        self.equalizer = equalizer
+        mainPlayer.audioModifiers.append(self.equalizer!.node)
+    }
+
+    /**
+     * Allows to update the presets for the current `Equalizer` instance
+     */
+    public func updateEqualizerPresets(_ preset: [PreSet]) throws {
+        guard let equalizer = equalizer else {
+            throw MissingEqualizerError()
+        }
+
+        try equalizer.setPreSets(preset)
+
+        self.equalizer = equalizer
+    }
+
+    /**
+     * Activates the preset at the given index for the current equalizer
+     */
+    public func activateEqualizerPreset(at index: Int) throws {
+        guard let equalizer = equalizer else {
+            throw MissingEqualizerError()
+        }
+
+        try equalizer.activate(preset: index)
+
+        self.equalizer = equalizer
+    }
+
+    /**
+     * Allows to tweak the gain of a specific band of the current equalizer
+     */
+    public func tweakEqualizerBandGain(band: Int, gain: Float) throws {
+        guard let equalizer = equalizer else {
+            throw MissingEqualizerError()
+        }
+
+        try equalizer.tweakBandGain(band: band, gain: gain)
+
+        self.equalizer = equalizer
+    }
+
+    /**
+     * Clears the current preset gains
+     */
+    public func resetGains() throws {
+        guard let equalizer = equalizer else {
+            throw MissingEqualizerError()
+        }
+
+        equalizer.resetGains()
+
+        self.equalizer = equalizer
+    }
+
+    /**
+     * Writes the final output of the engine to a file inside the documents directory
+     */
+    public func writeOutputToFile() throws {
+        guard let documentsDirectoryURL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first else {
+            throw CouldNotCreateOutputFileError()
+        }
+
+        let outputFileUrl = documentsDirectoryURL.appendingPathComponent(Date().description)
+
+        outputAbsolutePath = outputFileUrl.absoluteString
+
+        // We need some settings for the output audio file. The quickiest way to test this is to grab the same settings of the output node of the engine.
+        // Sadly it defaults to WAV format for the output file, and since we're planning to upload this file to the server, is the less performant format
+        // Some work should be done to extrapolate a good settings configuration
+        let settings = engine.outputNode.outputFormat(forBus: 0).settings
+
+        let outputFile = try AVAudioFile(forWriting: outputFileUrl, settings: settings)
+
+        engine.mainMixerNode.installTap(onBus: 0, bufferSize: 4096, format: nil) { [weak self] buffer, _ in
+            do {
+                try outputFile.write(from: buffer)
+            } catch {
+                self?.outputWriteError = error
+            }
+        }
+    }
+
+    /**
+     * Stops writing the final output of the engine to a file (see `writeOutputToFile`)
+     */
+    public func stopWritingOutputFile() {
+        guard outputAbsolutePath != nil else { // we never registered a tap via `writeOutputToFile`
+            return
+        }
+
+        engine.mainMixerNode.removeTap(onBus: 0)
+    }
+
+    // MARK: - Private API
+
+    /**
+     * Either plays the only track in queue (without trying to move to next) or moves to the next track (if available)
+     * Updates accordingly the `processingState` and `queueIndex` of the player
+     */
+    private func scheduleAudioSource() throws {
+        isPlaying = false
+        if queueManager.count == 1 {
+            processingState = .loading
+            play(track: try queueManager.element(at: 0))
+            queueIndex = 0
+        } else if let track = try tryMoveToNextTrack() { // first time to play a song
+            processingState = .loading
+            play(track: track)
+        } else {
+            processingState = .completed
+        }
+    }
+
+    /**
+     * Tries to move the queue index to the next track.
+     * If we're on the last track of the queue or the queue is empty, the queueIndex will not change.
+     * `LoopMode.one` works only when a track finishes by itself.
+     * - Parameter isForced: whether the next song must be played (ex. seek to next)
+     * - Note: if the current `AudioSource` is a `LoopingAudioSource`, it has priority on looping itself
+     */
+    func tryMoveToNextTrack(isForced: Bool = false) throws -> AudioSource? {
+        let currentIndex = queueIndex ?? 0
+
+        if let looping = try queueManager.element(at: currentIndex) as? LoopingAudioSource {
+            if looping.playedTimes < looping.count {
+                looping.playedTimes += 1
+                queueIndex = currentIndex
+                return looping.realAudioSource
+            }
+        }
+
+        if !isForced {
+            // do not change the index, and return the current track
+            if loopMode == LoopMode.one {
+                queueIndex = currentIndex
+                return try queueManager.element(at: currentIndex)
+            }
+        }
+        let nextIndex = queueIndex != nil ? currentIndex + 1 : currentIndex
+
+        // simply, the next track available
+        if queueManager.contains(nextIndex) {
+            queueIndex = nextIndex
+            return try queueManager.element(at: nextIndex)
+        }
+
+        // stop the player when we're at the end of the queue and is not forced the seek
+        if loopMode == .off && !isForced {
+            queueIndex = nil
+            return nil
+        }
+
+        // we're at the end of the queue, automatically go back to the first element
+        if loopMode == .all || isForced {
+            queueIndex = 0
+            return queueManager.first
+        }
+
+        // undetermined case, should never happens
+        return nil
+    }
+
+    func tryMoveToTrack(index: Int, isForced: Bool = false) throws -> AudioSource? {
+        let currentIndex = queueIndex ?? 0
+
+        if let looping = try queueManager.element(at: currentIndex) as? LoopingAudioSource {
+            if looping.playedTimes < looping.count {
+                looping.playedTimes += 1
+                queueIndex = currentIndex
+                return looping.realAudioSource
+            }
+        }
+
+        if queueManager.contains(index) {
+            queueIndex = index
+            return try queueManager.element(at: index)
+        }
+
+        // stop the player when we're at the end of the queue and is not forced the seek
+        if loopMode == .off && !isForced {
+            queueIndex = nil
+            return nil
+        }
+
+        // we're at the end of the queue, automatically go back to the first element
+        if loopMode == .all || isForced {
+            queueIndex = 0
+            return queueManager.first
+        }
+
+        // undetermined case, should never happen
+        return nil
+    }
+
+    /**
+     * Always try to push back the player*
+     */
+    func tryMoveToPreviousTrack() throws -> AudioSource {
+        guard queueManager.count > 0 else {
+            preconditionFailure("no track has been set")
+        }
+        let currentIndex = queueIndex ?? 0
+        // if track is playing for more than 5 second, restart the current track
+        if mainPlayer.elapsedTime ?? 0 >= JustAudioPlayer.ELAPSED_TIME_TO_RESTART_A_SONG {
+            queueIndex = currentIndex
+            return try queueManager.element(at: currentIndex)
+        }
+
+        let previousIndex = currentIndex - 1
+
+        if previousIndex == -1 {
+            // first song and want to go back to end of the queue
+            queueIndex = queueManager.count - 1
+            return try queueManager.element(at: queueIndex!)
+        }
+
+        if queueManager.contains(previousIndex) {
+            queueIndex = previousIndex
+            return try queueManager.element(at: previousIndex)
+        }
+
+        queueIndex = previousIndex
+        return try queueManager.element(at: previousIndex)
+    }
+
+    func play(track audioSource: AudioSource) {
+        if let url = audioSource.audioUrl {
+            // Audio modifiers must be finalized before loading the audio into the player, or they will not be applied
+            activateEffects(for: audioSource)
+
+            switch audioSource {
+            case let audioSource as ClippingAudioSource:
+                if audioSource.isLocal {
+                    mainPlayer.startSavedAudio(withSavedUrl: url)
+                } else {
+                    mainPlayer.startRemoteAudio(withRemoteUrl: url)
+                }
+            case let audioSource as LoopingAudioSource:
+                if audioSource.isLocal {
+                    mainPlayer.startSavedAudio(withSavedUrl: url)
+                } else {
+                    mainPlayer.startRemoteAudio(withRemoteUrl: url)
+                }
+            case is LocalAudioSource:
+                mainPlayer.startSavedAudio(withSavedUrl: url)
+            case is RemoteAudioSource:
+                mainPlayer.startRemoteAudio(withRemoteUrl: url)
+
+            default:
+                // TODO: should we throw?
+                preconditionFailure("Don't know how to play \(audioSource.self)")
+            }
+
+            seek(second: audioSource.startingTime)
+
+            let actWhenAudioSourceIsReady = {
+                self.subscribeToAllSubscriptions()
+
+                self.mainPlayer.play()
+            }
+
+            // start to play when we have loaded at least a `audioSource.startingTime` amount of reproducible audio.
+            // When seeking a remote audio before playing it, we receive a set of playingStatus updates that we doo not care for:
+            unsubscribeUpdates()
+
+            // buffer updates are not triggered for local audio sources (not seeked)
+            if audioSource.isLocal {
+                actWhenAudioSourceIsReady()
+                return
+            }
+
+            // notify we're loading the audio source
+            isPlaying = false
+            processingState = .loading
+
+            // following code is not so elegant, and fragile. It can probably benefit of a refactor where we enhance
+            // the coordination of the statuses of the player and move them to a own class
+            var subId: UInt?
+            subId = mainPlayer.updates.streamingBuffer.subscribe {
+                guard let subscription = subId else {
+                    return
+                }
+
+                let remoteCanPlay = $0.totalDurationBuffered > audioSource.startingTime && $0.isReadyForPlaying
+                let localCanPlay = audioSource.isLocal
+
+                if remoteCanPlay || localCanPlay {
+                    self.mainPlayer.updates.streamingBuffer.unsubscribe(subscription)
+                    actWhenAudioSourceIsReady()
+                }
+            }
+        }
+    }
+
+    /// Cleans the current list of audio effects inside the `SAPlayer`, and updates the list with the effects specified by the received audio source
+    private func activateEffects(for audioSource: AudioSource) {
+        // We want to keep the first item (needed for the play rate, and the equalizer, if present)
+
+        let rateModifier = mainPlayer.audioModifiers.first! // we always expect this to exist
+
+        let equalizerModifier = mainPlayer.audioModifiers.first { audioUnit in
+            audioUnit == equalizer?.node
+        }
+
+        mainPlayer.clearAudioModifiers()
+
+        mainPlayer.audioModifiers = [rateModifier]
+
+        globalEffects.forEach { mainPlayer.addAudioModifier($0.effect) }
+
+        audioSource.effects.forEach { mainPlayer.addAudioModifier($0.effect) }
+
+        if let equalizer = equalizerModifier {
+            mainPlayer.addAudioModifier(equalizer)
+        }
+    }
+}
+
+// MARK: - SwiftAudioPlayer private subscriptions
+
+@available(iOS 13.0, *)
+private extension JustAudioPlayer {
+    func subscribeToAllSubscriptions() {
+        subscribeToPlayingStatusUpdates()
+        subscribeToBufferPosition()
+        subscribeToElapsedTime()
+        subscribeToDuration()
+    }
+
+    func subscribeToPlayingStatusUpdates() {
+        playingStatusSubscription = mainPlayer.updates.playingStatus
+            .subscribe { [weak self] playingStatus in
+
+                guard let self = self, let queueIndex = self.queueIndex else {
+                    return
+                }
+
+                // initial volume
+                if self.volume == nil {
+                    self.volume = self.mainPlayer.playerNode?.volume
+                }
+
+                // initial speed
+                if self.speed == nil {
+                    self.speed = (self.mainPlayer.audioModifiers[0] as? AVAudioUnitTimePitch)?.rate
+                }
+
+                do {
+                    let convertedTrackStatus = AudioSourcePlayingStatus.fromSAPlayingStatus(playingStatus)
+
+                    let audioSource = try self.queueManager.element(at: queueIndex)
+
+                    try audioSource.setPlayingStatus(convertedTrackStatus)
+
+                    let currentTrackPlayingStatus = audioSource.playingStatus
+
+                    if currentTrackPlayingStatus == .ended {
+                        // TODO: it seems that time updates are keeping coming up even after the track finishes. Probably related to the `pause()` we commented on the `AudioStreamEngine` internal class, this needs some investigation. Meanwhile, keep this pause here
+                        self.mainPlayer.pause()
+
+                        if let track = try self.tryMoveToNextTrack() {
+                            self.processingState = .loading
+                            self.play(track: track)
+                        } else {
+                            self.processingState = .completed
+
+                            self.isPlaying = false
+                        }
+                    } else {
+                        if currentTrackPlayingStatus == .buffering {
+                            self.processingState = .buffering
+                        } else {
+                            self.processingState = .ready
+                        }
+                        if currentTrackPlayingStatus == .playing {
+                            self.isPlaying = true
+                        }
+                    }
+                } catch {
+                    self.processingState = .none
+                    preconditionFailure("Unexpected error \(error)")
+                }
+            }
+    }
+
+    func subscribeToBufferPosition() {
+        streamingBufferSubscription = mainPlayer.updates.streamingBuffer
+            .subscribe { [weak self] buffer in
+                self?.bufferPosition = buffer.bufferingProgress
+            }
+    }
+
+    func subscribeToElapsedTime() {
+        streamingBufferSubscription = mainPlayer.updates.elapsedTime
+            .subscribe { [weak self] elapsedTime in // let's assume this is expressed in seconds
+
+                guard let self = self else { return }
+
+                guard let currentIndex = self.queueIndex else {
+                    self.elapsedTime = elapsedTime
+                    return
+                }
+                do {
+                    let audioSource = try self.queueManager.element(at: currentIndex) as AudioSource
+                    if let clipped = audioSource as? ClippingAudioSource {
+                        self.elapsedTime = elapsedTime - clipped.start
+
+                        if clipped.playingStatus == .ended {
+                            // avoid double call to play
+                            return
+                        }
+                        if elapsedTime >= clipped.end { // here go next or pause?
+                            try clipped.setPlayingStatus(.ended)
+                            if let track = try self.tryMoveToNextTrack() {
+                                self.processingState = .loading
+                                self.play(track: track)
+                            } else {
+                                self.processingState = .completed
+                                self.pause()
+                            }
+                        }
+                    } else {
+                        if audioSource.playingStatus == .ended {
+                            // when one track is finished, it could be that the next one starts,
+                            // but the elapsed time still refers to the one just finished,
+                            // to avoid this we do not update the elapsed time
+                            self.elapsedTime = self.duration
+                            return
+                        }
+
+                        // When player is paused it emit last played time position
+                        if audioSource.playingStatus == .paused {
+                            return
+                        }
+
+                        self.elapsedTime = elapsedTime
+                    }
+                } catch {
+                    preconditionFailure("Unexpected error \(error)")
+                }
+            }
+    }
+
+    func subscribeToDuration() {
+        durationSubscription = mainPlayer.updates.duration
+            .subscribe { [weak self] duration in
+
+                guard let self = self else { return }
+
+                guard let currentIndex = self.queueIndex else {
+                    self.duration = duration
+                    return
+                }
+                if let clipped = (try? self.queueManager.element(at: currentIndex)) as? ClippingAudioSource {
+                    self.duration = clipped.duration
+                } else {
+                    self.duration = duration
+                }
+            }
+    }
+
+    func unsubscribeUpdates() {
+        if let subscription = elapsedTimeSubscription {
+            mainPlayer.updates.elapsedTime.unsubscribe(subscription)
+        }
+        if let subscription = durationSubscription {
+            mainPlayer.updates.duration.unsubscribe(subscription)
+        }
+        if let subscription = playingStatusSubscription {
+            mainPlayer.updates.playingStatus.unsubscribe(subscription)
+        }
+        if let subscription = streamingBufferSubscription {
+            mainPlayer.updates.streamingBuffer.unsubscribe(subscription)
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/JustAudioPlugin.h b/just_audio/ios/Classes/JustAudioPlugin.h
index a694322cd..b7471f17a 100644
--- a/just_audio/ios/Classes/JustAudioPlugin.h
+++ b/just_audio/ios/Classes/JustAudioPlugin.h
@@ -1,4 +1,5 @@
 #import <Flutter/Flutter.h>
+#import <AVFoundation/AVFoundation.h>
 
 @interface JustAudioPlugin : NSObject<FlutterPlugin>
 @end
diff --git a/just_audio/ios/Classes/JustAudioPlugin.m b/just_audio/ios/Classes/JustAudioPlugin.m
deleted file mode 120000
index 8583f76e2..000000000
--- a/just_audio/ios/Classes/JustAudioPlugin.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/JustAudioPlugin.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/JustAudioPlugin.m b/just_audio/ios/Classes/JustAudioPlugin.m
new file mode 100644
index 000000000..d5984cf2c
--- /dev/null
+++ b/just_audio/ios/Classes/JustAudioPlugin.m
@@ -0,0 +1,21 @@
+#import "JustAudioPlugin.h"
+#if __has_include(<just_audio/just_audio-Swift.h>)
+#import <just_audio/just_audio-Swift.h>
+#else
+// Support project import fallback if the generated compatibility header
+// is not copied when this plugin is created as a library.
+// https://forums.swift.org/t/swift-static-libraries-dont-copy-generated-objective-c-header/19816
+#import "just_audio-Swift.h"
+#endif
+
+#import <AVFoundation/AVFoundation.h>
+
+@implementation JustAudioPlugin
++ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
+    if (@available(iOS 13.0, *)) {
+        [SwiftJustAudioPlugin registerWithRegistrar:registrar];
+    } else {
+        // Fallback on earlier versions
+    }
+}
+@end
diff --git a/just_audio/ios/Classes/LoadControl.h b/just_audio/ios/Classes/LoadControl.h
deleted file mode 100644
index 8d6cb9445..000000000
--- a/just_audio/ios/Classes/LoadControl.h
+++ /dev/null
@@ -1,7 +0,0 @@
-@interface LoadControl : NSObject
-
-@property (readwrite, nonatomic) NSNumber *preferredForwardBufferDuration;
-@property (readwrite, nonatomic) BOOL canUseNetworkResourcesForLiveStreamingWhilePaused;
-@property (readwrite, nonatomic) NSNumber *preferredPeakBitRate;
-
-@end
diff --git a/just_audio/ios/Classes/LoadControl.m b/just_audio/ios/Classes/LoadControl.m
deleted file mode 120000
index 3b2b5d223..000000000
--- a/just_audio/ios/Classes/LoadControl.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/LoadControl.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/LoopingAudioSource.h b/just_audio/ios/Classes/LoopingAudioSource.h
deleted file mode 100644
index 7c524a978..000000000
--- a/just_audio/ios/Classes/LoopingAudioSource.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#import "AudioSource.h"
-#import <Flutter/Flutter.h>
-
-@interface LoopingAudioSource : AudioSource
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSArray<AudioSource *> *)audioSources;
-
-@end
diff --git a/just_audio/ios/Classes/LoopingAudioSource.m b/just_audio/ios/Classes/LoopingAudioSource.m
deleted file mode 120000
index 17c7958c5..000000000
--- a/just_audio/ios/Classes/LoopingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/LoopingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/MessagingHelpers/AudioSourceMessage.swift b/just_audio/ios/Classes/MessagingHelpers/AudioSourceMessage.swift
new file mode 100644
index 000000000..9dfeed7cb
--- /dev/null
+++ b/just_audio/ios/Classes/MessagingHelpers/AudioSourceMessage.swift
@@ -0,0 +1,79 @@
+//
+//  AudioSourceMessage.swift
+//  just_audio
+//
+//  Created by Mac on 24/09/22.
+//
+
+enum FlutterAudioSourceType: String {
+    case progressive
+    case dash
+    case hls
+    case silence
+    case concatenating
+    case clipping
+    case looping
+
+    static func parseAudioSequenceFrom(map: [String: Any?]) throws -> ([(String, AudioEffect)], AudioSequence) {
+        let message = map["audioSource"] as! [String: Any?]
+        let type = FlutterAudioSourceType(rawValue: message["type"] as! String)!
+
+        switch type {
+        case .progressive, .clipping, .dash, .hls, .looping:
+            let (effects, audioSource) = try FlutterAudioSourceType.parseAudioSourceFrom(map: message)
+            return (effects, IndexedAudioSequence(with: audioSource))
+        case .silence:
+            throw SwiftJustAudioPluginError.notImplementedError(message: "SilenceAudio is not yet supported")
+        case .concatenating:
+            let audioSourcesAndEffects = try (message["children"] as! [[String: Any?]]).map { try FlutterAudioSourceType.parseAudioSourceFrom(map: $0) }
+            let sequenceList = audioSourcesAndEffects.map { _, audioSource in
+                audioSource
+            }
+
+            let effectsList = audioSourcesAndEffects.map { effects, _ in
+                effects
+            }
+            return (effectsList.flatMap { $0 }, ConcatenatingAudioSequence(
+                with: sequenceList
+            ))
+        }
+    }
+
+    static func parseAudioSourceFrom(map: [String: Any?]) throws -> ([(String, AudioEffect)], AudioSource) {
+        let type = FlutterAudioSourceType(rawValue: map["type"] as! String)!
+
+        var effects: [(String, AudioEffect)] = []
+        if let rawEffects = map["effects"] as? [[String: Any?]] {
+            effects = rawEffects.map { DarwinAudioEffect.parseEffectFrom(map: $0) }
+        }
+
+        switch type {
+        case .progressive, .dash, .hls:
+            let uri = map["uri"] as! String
+            let isLocal = !uri.starts(with: "http")
+
+            if isLocal {
+                return (effects, LocalAudioSource(at: uri, effects: effects.map { _, effect in effect }))
+            }
+
+            return (effects, RemoteAudioSource(at: uri, effects: effects.map { _, effect in effect }))
+        case .silence:
+            throw SwiftJustAudioPluginError.notImplementedError(message: "SilenceAudio is not yet supported")
+        case .concatenating:
+            throw SwiftJustAudioPluginError.notImplementedError(message: "AudioSource cannot be concatenating")
+        case .clipping:
+            let (effects, audioSource) = try FlutterAudioSourceType.parseAudioSourceFrom(map: map["child"] as! [String: Any?])
+            return (effects, try ClippingAudioSource(
+                with: audioSource,
+                from: Double(map["start"] as! Int / (1000 * 1000)), // provided in  microseconds
+                to: Double(map["end"] as! Int / (1000 * 1000)) // provided in  microseconds
+            ))
+        case .looping:
+            let (effects, audioSource) = try FlutterAudioSourceType.parseAudioSourceFrom(map: map["child"] as! [String: Any?])
+            return (effects, LoopingAudioSource(
+                with: audioSource,
+                count: map["count"] as! Int
+            ))
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/MessagingHelpers/DarwinAudioEffect.swift b/just_audio/ios/Classes/MessagingHelpers/DarwinAudioEffect.swift
new file mode 100644
index 000000000..6723d358f
--- /dev/null
+++ b/just_audio/ios/Classes/MessagingHelpers/DarwinAudioEffect.swift
@@ -0,0 +1,122 @@
+//
+//  AudioEffect.swift
+//  just_audio
+//
+//  Created by Mac on 27/09/22.
+//
+
+enum DarwinAudioEffect: String {
+    case DarwinReverb
+    case DarwinDelay
+    case DarwinDistortion
+
+    static func parseEffectFrom(map: [String: Any?]) -> (String, AudioEffect) {
+        let type = DarwinAudioEffect(rawValue: map["type"] as! String)!
+        let enabled = map["enabled"] as? Bool ?? true
+
+        switch type {
+        case .DarwinReverb:
+            let effect = ReverbAudioEffect()
+            if let wetDrMix = map["wetDryMix"] as? Double {
+                effect.setWetDryMix(Float(wetDrMix))
+            }
+
+            if let preset = map["preset"] as? Int {
+                effect.setPreset(AVAudioUnitReverbPreset(rawValue: preset)!)
+            }
+
+            effect.setBypass(false) // Don't know why, but bypassing the reverb causes no final output
+            if enabled == false {
+                effect.setWetDryMix(0)
+            }
+
+            return (map["id"] as! String, effect)
+        case .DarwinDelay:
+            let effect = DelayAudioEffect()
+
+            if let wetDrMix = map["wetDryMix"] as? Double {
+                effect.setWetDryMix(Float(wetDrMix))
+            }
+
+            if let delayTime = map["delayTime"] as? Double {
+                effect.setDelayTime(delayTime)
+            }
+
+            if let feedback = map["feedback"] as? Double {
+                effect.setFeedback(Float(feedback))
+            }
+
+            if let lowPassCutoff = map["lowPassCutoff"] as? Double {
+                effect.setLowPassCutoff(Float(lowPassCutoff))
+            }
+
+            effect.setBypass(!enabled)
+
+            return (map["id"] as! String, effect)
+
+        case .DarwinDistortion:
+            let effect = DistortionAudioEffect()
+            if let preGain = map["preGain"] as? Double {
+                effect.setPreGain(Float(preGain))
+            }
+
+            if let wetDrMix = map["wetDryMix"] as? Double {
+                effect.setWetDryMix(Float(wetDrMix))
+            }
+
+            if let preset = map["preset"] as? Int {
+                effect.setPreset(AVAudioUnitDistortionPreset(rawValue: preset)!)
+            }
+
+            effect.setBypass(!enabled)
+            return (map["id"] as! String, effect)
+        }
+    }
+}
+
+extension AudioEffect {
+    var type: DarwinAudioEffect {
+        get throws {
+            if self is ReverbAudioEffect {
+                return .DarwinReverb
+            }
+
+            if self is DistortionAudioEffect {
+                return .DarwinDistortion
+            }
+
+            if self is DelayAudioEffect {
+                return .DarwinDelay
+            }
+
+            throw SwiftJustAudioPluginError.notSupportedError(value: self, message: "Could not find type for \(self)")
+        }
+    }
+
+    func toMap(_ id: String) throws -> [String: Any?] {
+        var result: [String: Any?] = [
+            "id": id,
+            "enable": !bypass,
+            "type": try type.rawValue,
+        ]
+
+        switch self {
+        case let effect as ReverbAudioEffect:
+            result["wetDryMix"] = effect.wetDryMix
+            result["preset"] = effect.preset.rawValue
+        case let effect as DelayAudioEffect:
+            result["delayTime"] = effect.delayTime
+            result["feedback"] = effect.feedback
+            result["lowPassCutoff"] = effect.lowPassCutoff
+            result["wetDryMix"] = effect.wetDryMix
+        case let effect as DistortionAudioEffect:
+            result["wetDryMix"] = effect.wetDryMix
+            result["preset"] = effect.preset.rawValue
+            result["preGain"] = effect.preGain
+        default:
+            throw SwiftJustAudioPluginError.notSupportedError(value: self, message: "Could not find type for \(self)")
+        }
+
+        return result
+    }
+}
diff --git a/just_audio/ios/Classes/MessagingHelpers/DataChannelMessage.swift b/just_audio/ios/Classes/MessagingHelpers/DataChannelMessage.swift
new file mode 100644
index 000000000..67e761cb5
--- /dev/null
+++ b/just_audio/ios/Classes/MessagingHelpers/DataChannelMessage.swift
@@ -0,0 +1,66 @@
+//
+//  DataChannelMessage.swift
+//  audio_session
+//
+//  Created by Mac on 27/09/22.
+//
+
+class DataChannelMessage: Equatable {
+    let outputAbsolutePath: String?
+    let outputError: Error?
+
+    let playing: Bool?
+    let volume: Float?
+    let speed: Float?
+
+    let loopMode: Int?
+    let shuffleMode: Int?
+
+    init(outputAbsolutePath: String?, outputError: Error?, playing: Bool, volume: Float?, speed: Float?, loopMode: LoopMode?, shuffleMode: Bool) {
+        self.outputAbsolutePath = outputAbsolutePath
+        self.outputError = outputError
+
+        self.playing = playing
+        self.volume = volume
+        self.speed = speed
+
+        self.shuffleMode = shuffleMode ? 1 : 0
+
+        switch loopMode {
+        case .off:
+            self.loopMode = 0
+        case .one:
+            self.loopMode = 1
+        case .all:
+            self.loopMode = 2
+        default:
+            self.loopMode = nil
+        }
+    }
+
+    func toMap() -> [String: Any?] {
+        return [
+            "outputAbsolutePath": outputAbsolutePath,
+            "outputError": outputError != nil ? "\(String(describing: outputError))" : nil,
+
+            "playing": playing,
+            "volume": volume,
+            "speed": speed,
+
+            "loopMode": loopMode,
+            "shuffleMode": shuffleMode,
+        ]
+    }
+
+    static func == (lhs: DataChannelMessage, rhs: DataChannelMessage) -> Bool {
+        lhs.outputAbsolutePath == rhs.outputAbsolutePath &&
+            "\(String(describing: lhs.outputError))" == "\(String(describing: rhs.outputError))" &&
+
+            lhs.playing == rhs.playing &&
+            lhs.volume == rhs.volume &&
+            lhs.speed == rhs.speed &&
+
+            lhs.loopMode == rhs.loopMode &&
+            lhs.shuffleMode == rhs.shuffleMode
+    }
+}
diff --git a/just_audio/ios/Classes/MessagingHelpers/EqualizerExtensions.swift b/just_audio/ios/Classes/MessagingHelpers/EqualizerExtensions.swift
new file mode 100644
index 000000000..0530fa38b
--- /dev/null
+++ b/just_audio/ios/Classes/MessagingHelpers/EqualizerExtensions.swift
@@ -0,0 +1,53 @@
+//
+//  DarwinEqualizerMessage.swift
+//  just_audio
+//
+//  Created by Mac on 24/09/22.
+//
+
+extension Equalizer {
+    /// returns an equalizer with an activated preset
+    static func parse(from map: [String: Any?]) throws -> Equalizer? {
+        if map["type"] as? String != "DarwinEqualizer" {
+            return nil
+        }
+
+        let parameters = map["parameters"] as! [String: Any]
+
+        let rawBands = parameters["bands"] as! [[String: Any]]
+        let frequenciesAndBands = rawBands.map { map in
+            let frequency = map["centerFrequency"] as! Double
+            let gain = map["gain"] as! Double
+            return (Int(frequency), Util.gainFrom(Float(gain)))
+        }
+
+        let frequencies = frequenciesAndBands.map { frequency, _ in
+            frequency
+        }
+
+        let bands = frequenciesAndBands.map { _, band in
+            band
+        }
+
+        let equalizer = try Equalizer(frequencies: frequencies, preSets: [bands])
+
+        try equalizer.activate(preset: 0)
+
+        return equalizer
+    }
+
+    func toMap() -> [String: Any?] {
+        return [
+            "minDecibels": Double(frequencies.first!),
+            "maxDecibels": Double(frequencies.last!),
+            "bands": activePreset?.mapWithIndex { index, band in
+                [
+                    "index": index,
+                    "gain": Double(band),
+                    "centerFrequency": Double(self.frequencies[index]),
+                ]
+            } ?? [],
+            "activePreset": activePreset,
+        ]
+    }
+}
diff --git a/just_audio/ios/Classes/MessagingHelpers/EventChannelMessage.swift b/just_audio/ios/Classes/MessagingHelpers/EventChannelMessage.swift
new file mode 100644
index 000000000..8a6f69795
--- /dev/null
+++ b/just_audio/ios/Classes/MessagingHelpers/EventChannelMessage.swift
@@ -0,0 +1,94 @@
+//
+//  EventChannelMessage.swift
+//  just_audio
+//
+//  Created by Mac on 27/09/22.
+//
+
+class EventChannelMessage: Equatable {
+    let processingState: Int
+    let updatePosition: Int
+    let bufferedPosition: Int
+    let duration: Int
+    let currentIndex: Int
+    let equalizerData: Equalizer?
+    let globalEffects: [String: AudioEffect]
+    let audioSourceEffects: [String: AudioEffect]
+
+    init(
+        processingState: ProcessingState?,
+        elapsedTime: Double?,
+        bufferedPosition: Double?,
+        duration: Double?,
+        currentIndex: Int?,
+        equalizerData: Equalizer?,
+        globalEffects: [String: AudioEffect],
+        audioSourceEffects: [String: AudioEffect]
+    ) {
+        switch processingState {
+        case .none?:
+            self.processingState = 0
+        case .loading:
+            self.processingState = 1
+        case .buffering:
+            self.processingState = 2
+        case .ready:
+            self.processingState = 3
+        case .completed:
+            self.processingState = 4
+        default:
+            self.processingState = 0
+        }
+
+        updatePosition = elapsedTime != nil ? Int(elapsedTime! * 1_000_000) : 0
+
+        if let bufferedPosition, !bufferedPosition.isNaN, bufferedPosition.isFinite {
+            self.bufferedPosition = Int(bufferedPosition * 1_000_000)
+        } else {
+            self.bufferedPosition = 0
+        }
+
+        self.duration = duration != nil ? Int(duration! * 1_000_000) : 0
+
+        self.currentIndex = currentIndex ?? 0
+
+        self.equalizerData = equalizerData
+        self.globalEffects = globalEffects
+        self.audioSourceEffects = audioSourceEffects
+    }
+
+    func toMap() throws -> [String: Any?] {
+        return [
+            "processingState": processingState,
+            "updatePosition": updatePosition,
+            "updateTime": Int(Date().timeIntervalSince1970 * 1000),
+            "bufferedPosition": bufferedPosition,
+            "icyMetadata": [:], // Currently not supported
+            "duration": duration,
+            "currentIndex": currentIndex,
+            "darwinEqualizer": equalizerData?.toMap(),
+            "darwinGlobalAudioEffects": try globalEffects.map { key, effect in
+                try effect.toMap(key)
+            },
+            "darwinAudioSourceEffects": try audioSourceEffects.map { key, effect in
+                try effect.toMap(key)
+            },
+        ]
+    }
+
+    static func == (lhs: EventChannelMessage, rhs: EventChannelMessage) -> Bool {
+        lhs.processingState == rhs.processingState &&
+            lhs.updatePosition == rhs.updatePosition &&
+            lhs.bufferedPosition == rhs.bufferedPosition &&
+            lhs.duration == rhs.duration &&
+            lhs.currentIndex == rhs.currentIndex &&
+            lhs.equalizerData?.frequencies == rhs.equalizerData?.frequencies &&
+            lhs.equalizerData?.activePreset == rhs.equalizerData?.activePreset
+    }
+}
+
+internal extension Array {
+    func mapWithIndex<T>(f: (Int, Element) -> T) -> [T] {
+        return zip(startIndex ..< endIndex, self).map(f)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/CREDITS.md b/just_audio/ios/Classes/SAPlayer/CREDITS.md
new file mode 100644
index 000000000..416b3c367
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/CREDITS.md
@@ -0,0 +1,221 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction,
+and distribution as defined by Sections 1 through 9 of this document.
+
+"Licensor" shall mean the copyright owner or entity authorized by
+the copyright owner that is granting the License.
+
+"Legal Entity" shall mean the union of the acting entity and all
+other entities that control, are controlled by, or are under common
+control with that entity. For the purposes of this definition,
+"control" means (i) the power, direct or indirect, to cause the
+direction or management of such entity, whether by contract or
+otherwise, or (ii) ownership of fifty percent (50%) or more of the
+outstanding shares, or (iii) beneficial ownership of such entity.
+
+"You" (or "Your") shall mean an individual or Legal Entity
+exercising permissions granted by this License.
+
+"Source" form shall mean the preferred form for making modifications,
+including but not limited to software source code, documentation
+source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical
+transformation or translation of a Source form, including but
+not limited to compiled object code, generated documentation,
+and conversions to other media types.
+
+"Work" shall mean the work of authorship, whether in Source or
+Object form, made available under the License, as indicated by a
+copyright notice that is included in or attached to the work
+(an example is provided in the Appendix below).
+
+"Derivative Works" shall mean any work, whether in Source or Object
+form, that is based on (or derived from) the Work and for which the
+editorial revisions, annotations, elaborations, or other modifications
+represent, as a whole, an original work of authorship. For the purposes
+of this License, Derivative Works shall not include works that remain
+separable from, or merely link (or bind by name) to the interfaces of,
+the Work and Derivative Works thereof.
+
+"Contribution" shall mean any work of authorship, including
+the original version of the Work and any modifications or additions
+to that Work or Derivative Works thereof, that is intentionally
+submitted to Licensor for inclusion in the Work by the copyright owner
+or by an individual or Legal Entity authorized to submit on behalf of
+the copyright owner. For the purposes of this definition, "submitted"
+means any form of electronic, verbal, or written communication sent
+to the Licensor or its representatives, including but not limited to
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+(b) You must cause any modified files to carry prominent notices
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+the conditions stated in this License.
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+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
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+
+6. Trademarks. This License does not grant permission to use the trade
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+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
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+   negligent acts) or agreed to in writing, shall any Contributor be
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+   incidental, or consequential damages of any character arising as a
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+9. Accepting Warranty or Additional Liability. While redistributing
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+   License. However, in accepting such obligations, You may act only
+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
+
+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+To apply the Apache License to your work, attach the following
+boilerplate notice, with the fields enclosed by brackets "[]"
+replaced with your own identifying information. (Don't include
+the brackets!)  The text should be enclosed in the appropriate
+comment syntax for the file format. We also recommend that a
+file or class name and description of purpose be included on the
+same "printed page" as the copyright notice for easier
+identification within third-party archives.
+
+Copyright [2018] [Syed Haris Ali]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+Copyright (c) 2019 Tanha Kabir <tanhakabir.ca@gmail.com>, Jon Mercer <mercer.jon@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
\ No newline at end of file
diff --git a/just_audio/ios/Classes/SAPlayer/Directors/AudioClockDirector.swift b/just_audio/ios/Classes/SAPlayer/Directors/AudioClockDirector.swift
new file mode 100644
index 000000000..906ef3f80
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Directors/AudioClockDirector.swift
@@ -0,0 +1,176 @@
+//
+//  AudioClockDirector.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import CoreMedia
+import Foundation
+
+public class AudioClockDirector {
+    private var currentAudioKey: Key?
+
+    private var depNeedleClosures: DirectorThreadSafeClosuresDeprecated<Needle> = DirectorThreadSafeClosuresDeprecated()
+    private var depDurationClosures: DirectorThreadSafeClosuresDeprecated<Duration> = DirectorThreadSafeClosuresDeprecated()
+    private var depPlayingStatusClosures: DirectorThreadSafeClosuresDeprecated<SAPlayingStatus> = DirectorThreadSafeClosuresDeprecated()
+    private var depBufferClosures: DirectorThreadSafeClosuresDeprecated<SAAudioAvailabilityRange> = DirectorThreadSafeClosuresDeprecated()
+
+    private var needleClosures: DirectorThreadSafeClosures<Needle> = DirectorThreadSafeClosures()
+    private var durationClosures: DirectorThreadSafeClosures<Duration> = DirectorThreadSafeClosures()
+    private var playingStatusClosures: DirectorThreadSafeClosures<SAPlayingStatus> = DirectorThreadSafeClosures()
+    private var bufferClosures: DirectorThreadSafeClosures<SAAudioAvailabilityRange> = DirectorThreadSafeClosures()
+
+    init() {}
+
+    func setKey(_ key: Key) {
+        currentAudioKey = key
+    }
+
+    func resetCache() {
+        needleClosures.resetCache()
+        durationClosures.resetCache()
+        playingStatusClosures.resetCache()
+        bufferClosures.resetCache()
+    }
+
+    func clear() {
+        depNeedleClosures.clear()
+        depDurationClosures.clear()
+        depPlayingStatusClosures.clear()
+        depBufferClosures.clear()
+
+        needleClosures.clear()
+        durationClosures.clear()
+        playingStatusClosures.clear()
+        bufferClosures.clear()
+    }
+
+    // MARK: - Attaches
+
+    // Needle
+    @available(*, deprecated, message: "Use subscribe without key in the closure for current audio updates")
+    func attachToChangesInNeedle(closure: @escaping (Key, Needle) throws -> Void) -> UInt {
+        return depNeedleClosures.attach(closure: closure)
+    }
+
+    func attachToChangesInNeedle(closure: @escaping (Needle) throws -> Void) -> UInt {
+        return needleClosures.attach(closure: closure)
+    }
+
+    // Duration
+    @available(*, deprecated, message: "Use subscribe without key in the closure for current audio updates")
+    func attachToChangesInDuration(closure: @escaping (Key, Duration) throws -> Void) -> UInt {
+        return depDurationClosures.attach(closure: closure)
+    }
+
+    func attachToChangesInDuration(closure: @escaping (Duration) throws -> Void) -> UInt {
+        return durationClosures.attach(closure: closure)
+    }
+
+    // Playing status
+    @available(*, deprecated, message: "Use subscribe without key in the closure for current audio updates")
+    func attachToChangesInPlayingStatus(closure: @escaping (Key, SAPlayingStatus) throws -> Void) -> UInt {
+        return depPlayingStatusClosures.attach(closure: closure)
+    }
+
+    func attachToChangesInPlayingStatus(closure: @escaping (SAPlayingStatus) throws -> Void) -> UInt {
+        return playingStatusClosures.attach(closure: closure)
+    }
+
+    // Buffer
+    @available(*, deprecated, message: "Use subscribe without key in the closure for current audio updates")
+    func attachToChangesInBufferedRange(closure: @escaping (Key, SAAudioAvailabilityRange) throws -> Void) -> UInt {
+        return depBufferClosures.attach(closure: closure)
+    }
+
+    func attachToChangesInBufferedRange(closure: @escaping (SAAudioAvailabilityRange) throws -> Void) -> UInt {
+        return bufferClosures.attach(closure: closure)
+    }
+
+    // MARK: - Detaches
+
+    func detachFromChangesInNeedle(withID id: UInt) {
+        depNeedleClosures.detach(id: id)
+        needleClosures.detach(id: id)
+    }
+
+    func detachFromChangesInDuration(withID id: UInt) {
+        depDurationClosures.detach(id: id)
+        durationClosures.detach(id: id)
+    }
+
+    func detachFromChangesInPlayingStatus(withID id: UInt) {
+        depPlayingStatusClosures.detach(id: id)
+        playingStatusClosures.detach(id: id)
+    }
+
+    func detachFromChangesInBufferedRange(withID id: UInt) {
+        depBufferClosures.detach(id: id)
+        bufferClosures.detach(id: id)
+    }
+}
+
+// MARK: - Receives notifications from AudioEngine on ticks
+
+extension AudioClockDirector {
+    func needleTick(_ key: Key, needle: Needle) {
+        guard key == currentAudioKey else {
+            Log.debug("silence old updates")
+            return
+        }
+        depNeedleClosures.broadcast(key: key, payload: needle)
+        needleClosures.broadcast(payload: needle)
+    }
+}
+
+extension AudioClockDirector {
+    func durationWasChanged(_ key: Key, duration: Duration) {
+        guard key == currentAudioKey else {
+            Log.debug("silence old updates")
+            return
+        }
+        depDurationClosures.broadcast(key: key, payload: duration)
+        durationClosures.broadcast(payload: duration)
+    }
+}
+
+extension AudioClockDirector {
+    func audioPlayingStatusWasChanged(_ key: Key, status: SAPlayingStatus) {
+        guard key == currentAudioKey else {
+            Log.debug("silence old updates")
+            return
+        }
+        depPlayingStatusClosures.broadcast(key: key, payload: status)
+        playingStatusClosures.broadcast(payload: status)
+    }
+}
+
+extension AudioClockDirector {
+    func changeInAudioBuffered(_ key: Key, buffered: SAAudioAvailabilityRange) {
+        guard key == currentAudioKey else {
+            Log.debug("silence old updates")
+            return
+        }
+        depBufferClosures.broadcast(key: key, payload: buffered)
+        bufferClosures.broadcast(payload: buffered)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Directors/AudioQueueDirector.swift b/just_audio/ios/Classes/SAPlayer/Directors/AudioQueueDirector.swift
new file mode 100644
index 000000000..8a8d11431
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Directors/AudioQueueDirector.swift
@@ -0,0 +1,31 @@
+//
+//  AudioQueueDirector.swift
+//  SwiftAudioPlayer
+//
+//  Created by Joe Williams on 3/10/21.
+//
+
+import Foundation
+
+public class AudioQueueDirector {
+    var closures: DirectorThreadSafeClosures<URL> = DirectorThreadSafeClosures()
+    init() {}
+
+    func create() {}
+
+    func clear() {
+        closures.clear()
+    }
+
+    func attach(closure: @escaping (URL) throws -> Void) -> UInt {
+        return closures.attach(closure: closure)
+    }
+
+    func detach(withID id: UInt) {
+        closures.detach(id: id)
+    }
+
+    func changeInQueue(url: URL) {
+        closures.broadcast(payload: url)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Directors/DownloadProgressDirector.swift b/just_audio/ios/Classes/SAPlayer/Directors/DownloadProgressDirector.swift
new file mode 100644
index 000000000..017a923d1
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Directors/DownloadProgressDirector.swift
@@ -0,0 +1,50 @@
+//
+//  DownloadProgressDirector.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-02-17.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+public class DownloadProgressDirector {
+    var closures: DirectorThreadSafeClosuresDeprecated<Double> = DirectorThreadSafeClosuresDeprecated()
+
+    init(audioDataManager: AudioDataManager) {
+        audioDataManager.attach { [weak self] key, progress in
+            self?.closures.broadcast(key: key, payload: progress)
+        }
+    }
+
+    func create() {}
+
+    func clear() {
+        closures.clear()
+    }
+
+    func attach(closure: @escaping (Key, Double) throws -> Void) -> UInt {
+        return closures.attach(closure: closure)
+    }
+
+    func detach(withID id: UInt) {
+        closures.detach(id: id)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Directors/StreamingDownloadDirector.swift b/just_audio/ios/Classes/SAPlayer/Directors/StreamingDownloadDirector.swift
new file mode 100644
index 000000000..44339ddb4
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Directors/StreamingDownloadDirector.swift
@@ -0,0 +1,64 @@
+//
+//  StreamingDownloadDirector.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 4/16/21.
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+public class StreamingDownloadDirector {
+    private var currentAudioKey: Key?
+
+    var closures: DirectorThreadSafeClosures<Double> = DirectorThreadSafeClosures()
+
+    init() {}
+
+    func setKey(_ key: Key) {
+        currentAudioKey = key
+    }
+
+    func resetCache() {
+        closures.resetCache()
+    }
+
+    func clear() {
+        closures.clear()
+    }
+
+    func attach(closure: @escaping (Double) throws -> Void) -> UInt {
+        return closures.attach(closure: closure)
+    }
+
+    func detach(withID id: UInt) {
+        closures.detach(id: id)
+    }
+}
+
+extension StreamingDownloadDirector {
+    func didUpdate(_ key: Key, networkStreamProgress: Double) {
+        guard key == currentAudioKey else {
+            Log.debug("silence old updates")
+            return
+        }
+
+        closures.broadcast(payload: networkStreamProgress)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/AudioDiskEngine.swift b/just_audio/ios/Classes/SAPlayer/Engine/AudioDiskEngine.swift
new file mode 100644
index 000000000..02b609701
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/AudioDiskEngine.swift
@@ -0,0 +1,149 @@
+//
+//  AudioDiskEngine.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+class AudioDiskEngine: AudioEngine {
+    var audioFormat: AVAudioFormat?
+    var audioSampleRate: Float = 0
+    var audioLengthSamples: AVAudioFramePosition = 0
+    var seekFrame: AVAudioFramePosition = 0
+    var currentPosition: AVAudioFramePosition = 0
+
+    var audioFile: AVAudioFile?
+
+    var currentFrame: AVAudioFramePosition {
+        guard let lastRenderTime = playerNode.lastRenderTime,
+              let playerTime = playerNode.playerTime(forNodeTime: lastRenderTime)
+        else {
+            return 0
+        }
+
+        return playerTime.sampleTime
+    }
+
+    var audioLengthSeconds: Float = 0
+
+    init(withSavedUrl url: AudioURL, delegate: AudioEngineDelegate?, engine: AVAudioEngine, audioClockDirector: AudioClockDirector) {
+        Log.info(url.key)
+
+        do {
+            audioFile = try AVAudioFile(forReading: url)
+        } catch {
+            Log.monitor(error.localizedDescription)
+        }
+
+        super.init(
+            url: url,
+            delegate: delegate,
+            engineAudioFormat: audioFile?.processingFormat ?? AudioEngine.defaultEngineAudioFormat,
+            engine: engine,
+            audioClockDirector: audioClockDirector
+        )
+
+        if let file = audioFile {
+            Log.debug("Audio file exists")
+            audioLengthSamples = file.length
+            audioFormat = file.processingFormat
+            audioSampleRate = Float(audioFormat?.sampleRate ?? 44100)
+            audioLengthSeconds = Float(audioLengthSamples) / audioSampleRate
+            duration = Duration(audioLengthSeconds)
+            bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: 0, durationLoadedByNetwork: duration, predictedDurationToLoad: duration, isPlayable: true)
+        } else {
+            Log.monitor("Could not load downloaded file with url: \(url)")
+        }
+
+        doRepeatedly(timeInterval: 0.2) { [weak self] in
+            guard let self = self else { return }
+
+            self.updateIsPlaying()
+            self.updateNeedle()
+        }
+
+        scheduleAudioFile()
+    }
+
+    private func scheduleAudioFile() {
+        guard let audioFile = audioFile else { return }
+
+        playerNode.scheduleFile(audioFile, at: nil, completionHandler: nil)
+    }
+
+    private func updateNeedle() {
+        guard engine.isRunning else { return }
+
+        currentPosition = currentFrame + seekFrame
+        currentPosition = max(currentPosition, 0)
+        currentPosition = min(currentPosition, audioLengthSamples)
+
+        if currentPosition >= audioLengthSamples {
+            playerNode.stop()
+            if state == .resumed {
+                state = .suspended
+            }
+            playingStatus = .ended
+        }
+
+        guard audioSampleRate != 0 else {
+            Log.error("Missing audio sample rate in update needle timer function!")
+            return
+        }
+
+        needle = Double(Float(currentPosition) / audioSampleRate)
+    }
+
+    override func seek(toNeedle needle: Needle) {
+        guard let audioFile = audioFile else {
+            Log.error("did not have audio file when trying to seek")
+            return
+        }
+
+        let playing = playerNode.isPlaying
+        let seekToNeedle = needle > Needle(duration) ? Needle(duration) : needle
+
+        self.needle = seekToNeedle // to tick while paused
+
+        seekFrame = AVAudioFramePosition(Float(seekToNeedle) * audioSampleRate)
+        seekFrame = max(seekFrame, 0)
+        seekFrame = min(seekFrame, audioLengthSamples)
+        currentPosition = seekFrame
+
+        playerNode.stop()
+
+        if currentPosition < audioLengthSamples {
+            playerNode.scheduleSegment(audioFile, startingFrame: seekFrame, frameCount: AVAudioFrameCount(audioLengthSamples - seekFrame), at: nil, completionHandler: nil)
+
+            if playing {
+                playerNode.play()
+            }
+        }
+    }
+
+    override func invalidate() {
+        super.invalidate()
+        // Nothing to invalidate for disk
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/AudioEngine.swift b/just_audio/ios/Classes/SAPlayer/Engine/AudioEngine.swift
new file mode 100644
index 000000000..229852e33
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/AudioEngine.swift
@@ -0,0 +1,245 @@
+//
+//  AudioEngine.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+protocol AudioEngineProtocol {
+    var key: Key { get }
+    var engine: AVAudioEngine! { get }
+    func play()
+    func pause()
+    func seek(toNeedle needle: Needle)
+    func invalidate()
+}
+
+protocol AudioEngineDelegate: AnyObject {
+    func didError()
+    var audioModifiers: [AVAudioUnit] { get }
+}
+
+class AudioEngine: AudioEngineProtocol {
+    weak var delegate: AudioEngineDelegate?
+    var key: Key
+
+    var engine: AVAudioEngine!
+    var playerNode: AVAudioPlayerNode!
+    private var engineInvalidated: Bool = false
+
+    private var audioClockDirector: AudioClockDirector
+
+    static let defaultEngineAudioFormat: AVAudioFormat = .init(commonFormat: .pcmFormatFloat32, sampleRate: 44100, channels: 2, interleaved: false)!
+
+    var state: TimerState = .suspended
+    enum TimerState {
+        case suspended
+        case resumed
+    }
+
+    var needle: Needle = -1 {
+        didSet {
+            if needle >= 0, oldValue != needle {
+                audioClockDirector.needleTick(key, needle: needle)
+            }
+        }
+    }
+
+    var duration: Duration = -1 {
+        didSet {
+            if duration >= 0, oldValue != duration {
+                audioClockDirector.durationWasChanged(key, duration: duration)
+            }
+        }
+    }
+
+    var playingStatus: SAPlayingStatus? {
+        didSet {
+            guard playingStatus != oldValue, let status = playingStatus else {
+                return
+            }
+
+            audioClockDirector.audioPlayingStatusWasChanged(key, status: status)
+        }
+    }
+
+    var bufferedSecondsDebouncer: SAAudioAvailabilityRange = .init(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, predictedDurationToLoad: Double.greatestFiniteMagnitude, isPlayable: false)
+
+    var bufferedSeconds: SAAudioAvailabilityRange = .init(startingNeedle: 0.0, durationLoadedByNetwork: 0.0, predictedDurationToLoad: Double.greatestFiniteMagnitude, isPlayable: false) {
+        didSet {
+            if bufferedSeconds.startingNeedle == 0.0, bufferedSeconds.durationLoadedByNetwork == 0.0 {
+                bufferedSecondsDebouncer = bufferedSeconds
+                audioClockDirector.changeInAudioBuffered(key, buffered: bufferedSeconds)
+                return
+            }
+
+            if bufferedSeconds.startingNeedle == oldValue.startingNeedle, bufferedSeconds.durationLoadedByNetwork == oldValue.durationLoadedByNetwork {
+                return
+            }
+
+            if bufferedSeconds.durationLoadedByNetwork - DEBOUNCING_BUFFER_TIME < bufferedSecondsDebouncer.durationLoadedByNetwork {
+                Log.debug("skipping pushing buffer: \(bufferedSeconds)")
+                return
+            }
+
+            bufferedSecondsDebouncer = bufferedSeconds
+            audioClockDirector.changeInAudioBuffered(key, buffered: bufferedSeconds)
+        }
+    }
+
+    private var audioModifiers: [AVAudioUnit]?
+
+    init(url: AudioURL, delegate: AudioEngineDelegate?, engineAudioFormat: AVAudioFormat, engine: AVAudioEngine, audioClockDirector: AudioClockDirector) {
+        key = url.key
+        self.delegate = delegate
+
+        self.engine = engine
+        self.audioClockDirector = audioClockDirector
+        playerNode = AVAudioPlayerNode()
+
+        initHelper(engineAudioFormat)
+    }
+
+    func initHelper(_ engineAudioFormat: AVAudioFormat) {
+        engine.attach(playerNode)
+        audioModifiers = delegate?.audioModifiers
+
+        defer { engine.prepare() }
+
+        guard let audioModifiers = audioModifiers, audioModifiers.count > 0 else {
+            engine.connect(playerNode, to: engine.mainMixerNode, format: engineAudioFormat)
+            return
+        }
+
+        audioModifiers.forEach { engine.attach($0) }
+
+        var i = 0
+
+        let node = audioModifiers[i]
+        engine.connect(playerNode, to: node, format: engineAudioFormat)
+
+        i += 1
+
+        while i < audioModifiers.count {
+            let lastNode = audioModifiers[i - 1]
+            let currNode = audioModifiers[i]
+
+            engine.connect(lastNode, to: currNode, format: engineAudioFormat)
+            i += 1
+        }
+
+        let finalNode = audioModifiers[audioModifiers.count - 1]
+
+        engine.connect(finalNode, to: engine.mainMixerNode, format: engineAudioFormat)
+    }
+
+    deinit {
+        if state == .resumed {
+            playerNode.stop()
+        }
+
+        engine.disconnectNodeInput(self.playerNode)
+        engine.detach(self.playerNode)
+
+        playerNode = nil
+        Log.info("deinit AVAudioEngine for \(key)")
+    }
+
+    func doRepeatedly(timeInterval: Double, _ closure: @escaping () -> Void) {
+        // A common error in AVAudioEngine is 'required condition is false: nil == owningEngine || GetEngine() == owningEngine'
+        // where there can only be one instance of engine running at a time and if there is already one when trying to start
+        // a new one then this error will be thrown.
+
+        // To handle this error we need to make sure we properly dispose of the engine when done using. In the case of timers, a
+        // repeating timer will maintain a strong reference to the body even if you state that you wanted a weak reference to self
+        // to mitigate this for repeating timers, you can either call timer.invalidate() properly or don't use repeat block timers.
+        // To be in better control of references and to mitigate any unforeseen issues, I decided to implement a recurisive version
+        // of the repeat block timer so I'm in full control of when to invalidate.
+
+        Timer.scheduledTimer(withTimeInterval: timeInterval, repeats: false) { [weak self] (_: Timer) in
+            guard let self = self else { return }
+            guard !self.engineInvalidated else {
+                self.delegate = nil
+                return
+            }
+            closure()
+            self.doRepeatedly(timeInterval: timeInterval, closure)
+        }
+    }
+
+    func updateIsPlaying() {
+        if !bufferedSeconds.isPlayable {
+            if bufferedSeconds.reachedEndOfAudio(needle: needle) {
+                playingStatus = .ended
+            } else {
+                playingStatus = .buffering
+            }
+            return
+        }
+
+        let isPlaying = engine.isRunning && playerNode.isPlaying
+        playingStatus = isPlaying ? .playing : .paused
+    }
+
+    func play() {
+        // https://stackoverflow.com/questions/36754934/update-mpremotecommandcenter-play-pause-button
+        if !(engine.isRunning) {
+            do {
+                try engine.start()
+
+            } catch {
+                Log.monitor(error.localizedDescription)
+            }
+        }
+
+        playerNode.play()
+
+        if state == .suspended {
+            state = .resumed
+        }
+    }
+
+    func pause() {
+        // https://stackoverflow.com/questions/36754934/update-mpremotecommandcenter-play-pause-button
+        playerNode.pause()
+
+        if state == .resumed {
+            state = .suspended
+        }
+    }
+
+    func seek(toNeedle _: Needle) {
+        fatalError("No implementation for seek inAudioEngine, should be using streaming or disk type")
+    }
+
+    func invalidate() {
+        engineInvalidated = true
+        playerNode.stop()
+
+        if let audioModifiers = audioModifiers, audioModifiers.count > 0 {
+            audioModifiers.forEach { engine.detach($0) }
+        }
+        Log.info("invalidated engine for key \(key)")
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/AudioStreamEngine.swift b/just_audio/ios/Classes/SAPlayer/Engine/AudioStreamEngine.swift
new file mode 100644
index 000000000..c41d30052
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/AudioStreamEngine.swift
@@ -0,0 +1,372 @@
+//
+//  AudioStreamEngine.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+/**
+ Start of the streaming chain. Get PCM buffer from lower chain and feed it to
+ engine
+
+ Main responsibilities:
+ POLL FOR BUFFER. When we start a stream it takes time for the lower chain to
+ receive audio format. We don't know how long this would take. Therefore we poll
+ continually. We also poll continually when user seeks because they could have
+ seeked beyond pcm buffer, and down-chain buffer. We keep polling until we fill
+ N buffers. If we stick to one buffer the audio sounds choppy because sometimes
+ the parser takes longer than usual to parse a buffer
+
+ RECURSE FOR BUFFER. When we receive N buffers we switch to recursive mode. This
+ means we only ask for the next buffer when one of the loaded buffers are
+ used up. This is to prevent high CPU usage (100%) because otherwise we keep
+ polling and parser keeps parsing even though the user is nowhere near that
+ part of audio
+
+ UPDATES FOR UI. Duration, needle ticking, playing status, etc.
+
+ HANDLE PLAYING. Ensure the engine is in the correct state when playing,
+ pausing, or seeking
+ */
+class AudioStreamEngine: AudioEngine {
+    // Constants
+    private let MAX_POLL_BUFFER_COUNT = 300 // Having one buffer in engine at a time is choppy.
+    private let MIN_BUFFERS_TO_BE_PLAYABLE = 1
+    private var PCM_BUFFER_SIZE: AVAudioFrameCount = 8192
+
+    private let queue = DispatchQueue(label: "SwiftAudioPlayer.StreamEngine", qos: .userInitiated)
+
+    // From init
+    private var converter: AudioConvertable!
+
+    // Fields
+    private var currentTimeOffset: TimeInterval = 0
+    private var streamChangeListenerId: UInt?
+
+    private var numberOfBuffersScheduledInTotal = 0 {
+        didSet {
+            Log.debug("number of buffers scheduled in total: \(numberOfBuffersScheduledInTotal)")
+            if numberOfBuffersScheduledInTotal == 0 {
+                if playingStatus == .playing { wasPlaying = true }
+                // Pausing here triggers an odd state where, while downloading the audio the player will not resume playing when the first buffer is ready
+//                pause()
+                //                delegate?.didError()
+                // TODO: we should not have an error here. We should instead have the throttler
+                // propegate when it doesn't enough buffers while they were playing
+                // TODO: "Make this a legitimate warning to user about needing more data from stream"
+            }
+
+            if numberOfBuffersScheduledInTotal > MIN_BUFFERS_TO_BE_PLAYABLE, wasPlaying {
+                wasPlaying = false
+                play()
+            }
+        }
+    }
+
+    private var wasPlaying = false
+    private var numberOfBuffersScheduledFromPoll = 0 {
+        didSet {
+            if numberOfBuffersScheduledFromPoll > MAX_POLL_BUFFER_COUNT {
+                shouldPollForNextBuffer = false
+            }
+
+            if numberOfBuffersScheduledFromPoll > MIN_BUFFERS_TO_BE_PLAYABLE {
+                if wasPlaying {
+                    play()
+                    wasPlaying = false
+                }
+            }
+        }
+    }
+
+    private var shouldPollForNextBuffer = true {
+        didSet {
+            if shouldPollForNextBuffer {
+                numberOfBuffersScheduledFromPoll = 0
+            }
+        }
+    }
+
+    // Prediction keeps fluctuating. We debounce to keep the UI from jitter
+    private var predictedStreamDurationDebounceHelper: Duration = 0
+    private var predictedStreamDuration: Duration = 0 {
+        didSet {
+            let d = predictedStreamDuration
+            let s = predictedStreamDurationDebounceHelper
+            if d / DEBOUNCING_BUFFER_TIME != s / DEBOUNCING_BUFFER_TIME {
+                predictedStreamDurationDebounceHelper = predictedStreamDuration
+                duration = predictedStreamDuration
+            }
+        }
+    }
+
+    private var seekNeedleCommandBeforeEngineWasReady: Needle?
+    private var isPlayable = false {
+        didSet {
+            if isPlayable != oldValue {
+                Log.info("isPlayable status changed: \(isPlayable)")
+            }
+
+            if isPlayable, let needle = seekNeedleCommandBeforeEngineWasReady {
+                seekNeedleCommandBeforeEngineWasReady = nil
+                seek(toNeedle: needle)
+            }
+        }
+    }
+
+    private var streamingDownloadDirector: StreamingDownloadDirector
+
+    init(withRemoteUrl url: AudioURL, delegate: AudioEngineDelegate?, bitrate: SAPlayerBitrate, engine: AVAudioEngine, withAudioClockDirector audioClockDirector: AudioClockDirector, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector, withAudioDataManager audioDataManager: AudioDataManager) {
+        Log.info(url)
+
+        self.streamingDownloadDirector = streamingDownloadDirector
+
+        super.init(url: url, delegate: delegate, engineAudioFormat: AudioEngine.defaultEngineAudioFormat, engine: engine, audioClockDirector: audioClockDirector)
+
+        switch bitrate {
+        case .high:
+            PCM_BUFFER_SIZE = 8192
+        case .low:
+            PCM_BUFFER_SIZE = 4096
+        }
+
+        do {
+            converter = try AudioConverter(
+                withRemoteUrl: url,
+                toEngineAudioFormat: AudioEngine.defaultEngineAudioFormat,
+                withPCMBufferSize: PCM_BUFFER_SIZE,
+                withAudioDataManager: audioDataManager,
+                withStreamingDownloadDirector: streamingDownloadDirector
+            )
+        } catch {
+            delegate?.didError()
+        }
+
+        streamingDownloadDirector.setKey(key)
+        streamingDownloadDirector.resetCache()
+
+        streamChangeListenerId = streamingDownloadDirector.attach { [weak self] _ in
+            guard let self = self else { return }
+
+            // polling for buffers when we receive data. This won't be throttled on fresh new audio or seeked audio but in all other cases it most likely will be throttled
+            self.pollForNextBuffer() //  no buffer updates because thread issues if I try to update buffer status in streaming listener
+        }
+
+        let timeInterval = 1 / (converter.engineAudioFormat.sampleRate / Double(PCM_BUFFER_SIZE))
+
+        doRepeatedly(timeInterval: timeInterval) { [weak self] in
+            guard let self = self else { return }
+
+            self.repeatedUpdates()
+        }
+    }
+
+    deinit {
+        if let id = streamChangeListenerId {
+            streamingDownloadDirector.detach(withID: id)
+        }
+    }
+
+    private func repeatedUpdates() {
+        pollForNextBuffer()
+        updateNetworkBufferRange() // thread issues if I try to update buffer status in streaming listener
+        updateNeedle()
+        updateIsPlaying()
+        updateDuration()
+    }
+
+    // MARK: - Timer loop
+
+    // Called when
+    // 1. First time audio is finally parsed
+    // 2. When we run to the end of the network buffer and we're waiting again
+    private func pollForNextBuffer() {
+        guard shouldPollForNextBuffer else { return }
+
+        pollForNextBufferRecursive()
+    }
+
+    private func pollForNextBufferRecursive() {
+        if !converter.initialized {
+            return
+        }
+
+        do {
+            var nextScheduledBuffer: AVAudioPCMBuffer! = try converter.pullBuffer()
+            numberOfBuffersScheduledFromPoll += 1
+            numberOfBuffersScheduledInTotal += 1
+
+            Log.debug("processed buffer for engine of frame length \(nextScheduledBuffer.frameLength)")
+            queue.async { [weak self] in
+                if #available(iOS 11.0, tvOS 11.0, *) {
+                    // to make sure the pcm buffers are properly free'd from memory we need to nil them after the player has used them
+                    self?.playerNode.scheduleBuffer(nextScheduledBuffer, completionCallbackType: .dataConsumed, completionHandler: { _ in
+                        nextScheduledBuffer = nil
+                        self?.numberOfBuffersScheduledInTotal -= 1
+                        self?.pollForNextBufferRecursive()
+                    })
+                } else {
+                    self?.playerNode.scheduleBuffer(nextScheduledBuffer) {
+                        nextScheduledBuffer = nil
+                        self?.numberOfBuffersScheduledInTotal -= 1
+                        self?.pollForNextBufferRecursive()
+                    }
+                }
+            }
+
+            // TODO: re-do how to pass and log these errors
+        } catch ConverterError.reachedEndOfFile {
+            Log.info(ConverterError.reachedEndOfFile.localizedDescription)
+        } catch ConverterError.notEnoughData {
+            Log.debug(ConverterError.notEnoughData.localizedDescription)
+        } catch ConverterError.superConcerningShouldNeverHappen {
+            Log.error(ConverterError.superConcerningShouldNeverHappen.localizedDescription)
+        } catch {
+            Log.debug(error.localizedDescription)
+        }
+    }
+
+    private func updateNetworkBufferRange() { // for ui
+        let range = converter.pollNetworkAudioAvailabilityRange()
+        isPlayable = (numberOfBuffersScheduledInTotal >= MIN_BUFFERS_TO_BE_PLAYABLE && range.1 > 0) && predictedStreamDuration > 0
+        Log.debug("loaded \(range), numberOfBuffersScheduledInTotal: \(numberOfBuffersScheduledInTotal), isPlayable: \(isPlayable)")
+        bufferedSeconds = SAAudioAvailabilityRange(startingNeedle: range.0, durationLoadedByNetwork: range.1, predictedDurationToLoad: predictedStreamDuration, isPlayable: isPlayable)
+    }
+
+    private func updateNeedle() {
+        guard engine.isRunning else { return }
+
+        guard let nodeTime = playerNode.lastRenderTime,
+              let playerTime = playerNode.playerTime(forNodeTime: nodeTime)
+        else {
+            return
+        }
+
+        // NOTE: playerTime can sometimes be < 0 when seeking. Reason pasted below
+        // "The usual AVAudioNode sample times (as observed by lastRenderTime ) have an arbitrary zero point.
+        // AVAudioPlayerNode superimposes a second “player timeline” on top of this, to reflect when the
+        // player was started, and intervals during which it was paused."
+        var currentTime = TimeInterval(playerTime.sampleTime) / playerTime.sampleRate
+        currentTime = currentTime > 0 ? currentTime : 0
+
+        needle = (currentTime + currentTimeOffset)
+    }
+
+    private func updateDuration() {
+        if let d = converter.pollPredictedDuration() {
+            predictedStreamDuration = d
+        }
+    }
+
+    // MARK: - Overriden From Parent
+
+    override func seek(toNeedle needle: Needle) {
+        Log.info("didSeek to needle: \(needle)")
+
+        // if not playable (data not loaded etc), duration could be zero.
+        guard isPlayable else {
+            if predictedStreamDuration == 0 {
+                seekNeedleCommandBeforeEngineWasReady = needle
+            }
+            return
+        }
+
+        guard needle < ceil(predictedStreamDuration) else {
+            if !isPlayable {
+                seekNeedleCommandBeforeEngineWasReady = needle
+            }
+            Log.error("tried to seek beyond duration")
+            return
+        }
+
+        self.needle = needle // to tick while paused
+
+        queue.sync { [weak self] in
+            self?.seekHelperDispatchQueue(needle: needle)
+        }
+    }
+
+    /**
+     The UI would freeze when we tried to call playerNode.stop() while
+     simultaneously filling a buffer on another thread. Solution was to put
+     playerNode related commands in a DispatchQueue
+     */
+    private func seekHelperDispatchQueue(needle: Needle) {
+        wasPlaying = playerNode.isPlaying
+
+        // NOTE: Order matters
+        // seek needs to be called before stop
+        // Why? Stop will clear all buffers. Each buffer being cleared
+        // will call the callback which then fills the buffers with things to the
+        // right of the needle. If the order of these two were reversed we would
+        // schedule things to the right of the old needle then actually schedule everything
+        // after the new needle
+        // We also need to poll right after the seek to give us more buffers
+        converter.seek(needle)
+        currentTimeOffset = TimeInterval(needle)
+
+        playerNode.stop()
+
+        shouldPollForNextBuffer = true
+
+        updateNetworkBufferRange()
+    }
+
+    override func pause() {
+        queue.async { [weak self] in
+            self?.pauseHelperDispatchQueue()
+        }
+    }
+
+    private func pauseHelperDispatchQueue() {
+        super.pause()
+    }
+
+    override func play() {
+        queue.async { [weak self] in
+            self?.playHelperDispatchQueue()
+        }
+    }
+
+    private func playHelperDispatchQueue() {
+        super.play()
+    }
+
+    override func invalidate() {
+        queue.sync { [weak self] in
+            self?.invalidateHelperDispatchQueue()
+            self?.converter.invalidate()
+        }
+    }
+
+    private func invalidateHelperDispatchQueue() {
+        super.invalidate()
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/AudioThrottler.swift b/just_audio/ios/Classes/SAPlayer/Engine/AudioThrottler.swift
new file mode 100644
index 000000000..09f8501fb
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/AudioThrottler.swift
@@ -0,0 +1,176 @@
+//
+//  AudioThrottler.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+protocol AudioThrottleDelegate: AnyObject {
+    func didUpdate(totalBytesExpected bytes: Int64)
+}
+
+protocol AudioThrottleable {
+    init(withRemoteUrl url: AudioURL, withDelegate delegate: AudioThrottleDelegate, withAudioDataManager audioDataManager: AudioDataManager, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector)
+    func pullNextDataPacket(_ callback: @escaping (Data?) -> Void)
+    func tellSeek(offset: UInt64)
+    func pollRangeOfBytesAvailable() -> (UInt64, UInt64)
+    func invalidate()
+}
+
+class AudioThrottler: AudioThrottleable {
+    private let queue = DispatchQueue(label: "SwiftAudioPlayer.Throttler", qos: .userInitiated)
+
+    // Init
+    let url: AudioURL
+    weak var delegate: AudioThrottleDelegate?
+
+    private var networkData: [Data] = [] {
+        didSet {
+//            Log.test("NETWORK DATA \(networkData.count)")
+        }
+    }
+
+    private var lastSentDataPacketIndex = -1
+
+    var shouldThrottle = false
+    var byteOffsetBecauseOfSeek: UInt = 0
+
+    // This will be sent once at beginning of stream and every network seek
+    var totalBytesExpected: Int64? {
+        didSet {
+            if let bytes = totalBytesExpected {
+                delegate?.didUpdate(totalBytesExpected: Int64(byteOffsetBecauseOfSeek) + bytes)
+            }
+        }
+    }
+
+    var largestPollingOffsetDifference: UInt64 = 1
+
+    private var audioDataManager: AudioDataManager
+
+    required init(withRemoteUrl url: AudioURL, withDelegate delegate: AudioThrottleDelegate, withAudioDataManager audioDataManager: AudioDataManager, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector) {
+        self.url = url
+        self.delegate = delegate
+        self.audioDataManager = audioDataManager
+
+        audioDataManager.startStream(withRemoteURL: url) { [weak self] (pto: StreamProgressPTO) in
+            guard let self = self else { return }
+            Log.debug("received stream data of size \(pto.getData().count) and progress: \(pto.getProgress())")
+
+            if let totalBytesExpected = pto.getTotalBytesExpected() {
+                self.totalBytesExpected = totalBytesExpected
+            }
+
+            self.queue.async { [weak self] in
+                self?.networkData.append(pto.getData())
+                streamingDownloadDirector.didUpdate(url.key, networkStreamProgress: pto.getProgress())
+            }
+        }
+    }
+
+    func tellSeek(offset: UInt64) {
+        Log.info("seek with offset: \(offset)")
+
+        queue.async { [weak self] in
+            self?.seekQueueHelper(offset)
+        }
+    }
+
+    func seekQueueHelper(_ offset: UInt64) {
+        let offsetToFind = Int(offset) - Int(byteOffsetBecauseOfSeek)
+
+        var shouldStartNewStream = false
+
+        // if we have no data start a new stream after seek
+        if networkData.count == 0 {
+            shouldStartNewStream = true
+        }
+
+        // if what we're looking for is outside of available data, start a new stream
+        if offset < byteOffsetBecauseOfSeek || offsetToFind > networkData.sum {
+            shouldStartNewStream = true
+        }
+
+        // we should have the data within our cache. find it and save the index for the next pull
+        if let indexOfDataContainingOffset = networkData.getIndexContainingByteOffset(offsetToFind) {
+            lastSentDataPacketIndex = indexOfDataContainingOffset - 1
+        }
+
+        if shouldStartNewStream {
+            byteOffsetBecauseOfSeek = UInt(offset)
+            lastSentDataPacketIndex = -1
+            audioDataManager.seekStream(withRemoteURL: url, toByteOffset: offset)
+
+            networkData = []
+            return
+        }
+
+        Log.error("83672 Should not get here")
+    }
+
+    func pollRangeOfBytesAvailable() -> (UInt64, UInt64) {
+        let start = byteOffsetBecauseOfSeek
+        let end = networkData.sum + Int(byteOffsetBecauseOfSeek)
+
+        return (UInt64(start), UInt64(end))
+    }
+
+    func pullNextDataPacket(_ callback: @escaping (Data?) -> Void) {
+        queue.async { [weak self] in
+            guard let self = self else { return }
+            guard self.lastSentDataPacketIndex < self.networkData.count - 1 else {
+                callback(nil)
+                return
+            }
+
+            self.lastSentDataPacketIndex += 1
+
+            callback(self.networkData[self.lastSentDataPacketIndex])
+        }
+    }
+
+    func invalidate() {
+        audioDataManager.deleteStream(withRemoteURL: url)
+    }
+}
+
+extension Array where Element == Data {
+    var sum: Int {
+        guard count > 0 else { return 0 }
+        return reduce(0) { $0 + $1.count }
+    }
+
+    func getIndexContainingByteOffset(_ offset: Int) -> Int? {
+        var dataCount = 0
+
+        for (i, data) in enumerated() {
+            if offset >= dataCount, offset <= dataCount + data.count {
+                return i
+            }
+
+            dataCount += data.count
+        }
+
+        return nil
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverter.swift b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverter.swift
new file mode 100644
index 000000000..8189c93a4
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverter.swift
@@ -0,0 +1,210 @@
+//
+//  AudioConverter.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AudioToolbox
+import AVFoundation
+import Foundation
+
+protocol AudioConvertable {
+    var engineAudioFormat: AVAudioFormat { get }
+    var initialized: Bool { get }
+
+    init(withRemoteUrl url: AudioURL, toEngineAudioFormat: AVAudioFormat, withPCMBufferSize size: AVAudioFrameCount, withAudioDataManager audioDataManager: AudioDataManager, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector) throws
+    func pullBuffer() throws -> AVAudioPCMBuffer
+    func pollPredictedDuration() -> Duration?
+    func pollNetworkAudioAvailabilityRange() -> (Needle, Duration)
+    func seek(_ needle: Needle)
+    func invalidate()
+}
+
+/**
+ Creates PCM Buffers for the audio engine
+
+ Main Responsibilities:
+
+ CREATE CONVERTER. Waits for parser to give back audio format then creates a
+ converter.
+
+ USE CONVERTER. The converter takes parsed audio packets and 1. transforms them
+ into a format that the engine can take. 2. Fills a buffer of a certain size.
+ Note that we might not need a converted if the format that the engine takes in
+ is the same as what the parser outputs.
+
+ KEEP AUDIO INDEX: The engine keeps trying to pull a buffer from converter. The
+ converter will keep pulling from parser. The converter calculates the exact
+ index that it wants to convert and keeps pulling at that index until the parser
+ passes up a value.
+ */
+class AudioConverter: AudioConvertable {
+    let queue = DispatchQueue(label: "SwiftAudioPlayer.audio_reader_queue")
+
+    // From Init
+    var parser: AudioParsable!
+
+    // From protocol
+    public var engineAudioFormat: AVAudioFormat
+    let pcmBufferSize: AVAudioFrameCount
+
+    // Field
+    var converter: AudioConverterRef? // set by AudioConverterNew
+
+    public var initialized: Bool {
+        converter != nil
+    }
+
+    var currentAudioPacketIndex: AVAudioPacketCount = 0
+
+    // use to store reference to the allocated buffers from the converter to properly deallocate them before the next packet is being converted
+    var converterBuffer: UnsafeMutableRawPointer?
+    var converterDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>?
+
+    required init(withRemoteUrl url: AudioURL, toEngineAudioFormat: AVAudioFormat, withPCMBufferSize size: AVAudioFrameCount, withAudioDataManager audioDataManager: AudioDataManager, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector) throws {
+        engineAudioFormat = toEngineAudioFormat
+        pcmBufferSize = size
+
+        do {
+            parser = try AudioParser(
+                withRemoteUrl: url,
+                bufferSize: Int(size),
+                withAudioDataManager: audioDataManager,
+                withStreamingDownloadDirector: streamingDownloadDirector,
+                parsedFileAudioFormatCallback: {
+                    [weak self] (fileAudioFormat: AVAudioFormat) in
+                    guard let strongSelf = self else { return }
+
+                    let sourceFormat = fileAudioFormat.streamDescription
+                    let destinationFormat = strongSelf.engineAudioFormat.streamDescription
+                    let result = AudioConverterNew(sourceFormat, destinationFormat, &strongSelf.converter)
+
+                    guard result == noErr else {
+                        Log.monitor(ConverterError.unableToCreateConverter(result).errorDescription as Any)
+                        return
+                    }
+                }
+            )
+        } catch {
+            throw ConverterError.failedToCreateParser
+        }
+    }
+
+    deinit {
+        guard let converter = converter else {
+            Log.error("No converter n deinit!")
+            return
+        }
+
+        guard AudioConverterDispose(converter) == noErr else {
+            Log.monitor("failed to dispose audio converter")
+            return
+        }
+    }
+
+    func pullBuffer() throws -> AVAudioPCMBuffer {
+        guard let converter = converter else {
+            Log.debug("reader_error trying to read before converter has been created")
+            throw ConverterError.cannotCreatePCMBufferWithoutConverter
+        }
+
+        guard let pcmBuffer = AVAudioPCMBuffer(pcmFormat: engineAudioFormat, frameCapacity: pcmBufferSize) else {
+            Log.monitor(ConverterError.failedToCreatePCMBuffer.errorDescription as Any)
+            throw ConverterError.failedToCreatePCMBuffer
+        }
+        pcmBuffer.frameLength = pcmBufferSize
+
+        /**
+         The whole thing is wrapped in queue.sync() because the converter listener
+         needs to eventually increment the audioPatcketIndex. We don't want threads
+         to mess this up
+         */
+        return try queue.sync { () -> AVAudioPCMBuffer in
+            let framesPerPacket = engineAudioFormat.streamDescription.pointee.mFramesPerPacket
+            var numberOfPacketsWeWantTheBufferToFill = pcmBuffer.frameLength / framesPerPacket
+
+            let context = unsafeBitCast(self, to: UnsafeMutableRawPointer.self)
+            let status = AudioConverterFillComplexBuffer(converter, ConverterListener, context, &numberOfPacketsWeWantTheBufferToFill, pcmBuffer.mutableAudioBufferList, nil)
+
+            guard status == noErr else {
+                switch status {
+                case ReaderMissingSourceFormatError:
+                    throw ConverterError.parserMissingDataFormat
+                case ReaderReachedEndOfDataError:
+                    throw ConverterError.reachedEndOfFile
+                case ReaderNotEnoughDataError:
+                    throw ConverterError.notEnoughData
+                case ReaderShouldNotHappenError:
+                    throw ConverterError.superConcerningShouldNeverHappen
+                default:
+                    throw ConverterError.converterFailed(status)
+                }
+            }
+            return pcmBuffer
+        }
+    }
+
+    func seek(_ needle: Needle) {
+        guard let audioPacketIndex = getPacketIndex(forNeedle: needle) else {
+            return
+        }
+        Log.info("didSeek to packet index: \(audioPacketIndex)")
+        queue.sync {
+            currentAudioPacketIndex = audioPacketIndex
+            parser.tellSeek(toIndex: audioPacketIndex)
+        }
+    }
+
+    func pollPredictedDuration() -> Duration? {
+        return parser.predictedDuration
+    }
+
+    func pollNetworkAudioAvailabilityRange() -> (Needle, Duration) {
+        return parser.pollRangeOfSecondsAvailableFromNetwork()
+    }
+
+    func invalidate() {
+        parser.invalidate()
+    }
+
+    private func getPacketIndex(forNeedle needle: Needle) -> AVAudioPacketCount? {
+        guard needle >= 0 else {
+            Log.error("needle should never be a negative number! needle received: \(needle)")
+            return nil
+        }
+        guard let frame = frameOffset(forTime: TimeInterval(needle)) else { return nil }
+        guard let framesPerPacket = parser.fileAudioFormat?.streamDescription.pointee.mFramesPerPacket else { return nil }
+        return AVAudioPacketCount(frame) / AVAudioPacketCount(framesPerPacket)
+    }
+
+    private func frameOffset(forTime time: TimeInterval) -> AVAudioFramePosition? {
+        guard let _ = parser.fileAudioFormat?.streamDescription.pointee, let frameCount = parser.totalPredictedAudioFrameCount, let duration = parser.predictedDuration else { return nil }
+        let ratio = time / duration
+        return AVAudioFramePosition(Double(frameCount) * ratio)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterErrors.swift b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterErrors.swift
new file mode 100644
index 000000000..bed5895f7
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterErrors.swift
@@ -0,0 +1,124 @@
+//
+//  AudioConverterErrors.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AudioToolbox
+import AVFoundation
+import Foundation
+
+let ReaderReachedEndOfDataError: OSStatus = 932_332_581
+let ReaderNotEnoughDataError: OSStatus = 932_332_582
+let ReaderMissingSourceFormatError: OSStatus = 932_332_583
+let ReaderMissingParserError: OSStatus = 932_332_584
+let ReaderShouldNotHappenError: OSStatus = 932_332_585
+
+public enum ConverterError: LocalizedError {
+    case cannotLockQueue
+    case converterFailed(OSStatus)
+    case cannotCreatePCMBufferWithoutConverter
+    case failedToCreateDestinationFormat
+    case failedToCreatePCMBuffer
+    case notEnoughData
+    case parserMissingDataFormat
+    case reachedEndOfFile
+    case unableToCreateConverter(OSStatus)
+    case superConcerningShouldNeverHappen
+    case throttleParsingBuffersForEngine
+    case failedToCreateParser
+
+    public var errorDescription: String? {
+        switch self {
+        case .cannotLockQueue:
+            Log.warn("Failed to lock queue")
+            return "Failed to lock queue"
+        case let .converterFailed(status):
+            Log.warn(localizedDescriptionFromConverterError(status))
+            return localizedDescriptionFromConverterError(status)
+        case .failedToCreateDestinationFormat:
+            Log.warn("Failed to create a destination (processing) format")
+            return "Failed to create a destination (processing) format"
+        case .failedToCreatePCMBuffer:
+            Log.warn("Failed to create PCM buffer for reading data")
+            return "Failed to create PCM buffer for reading data"
+        case .notEnoughData:
+            Log.warn("Not enough data for read-conversion operation")
+            return "Not enough data for read-conversion operation"
+        case .parserMissingDataFormat:
+            Log.warn("Parser is missing a valid data format")
+            return "Parser is missing a valid data format"
+        case .reachedEndOfFile:
+            Log.warn("Reached the end of the file")
+            return "Reached the end of the file"
+        case let .unableToCreateConverter(status):
+            return localizedDescriptionFromConverterError(status)
+        case .superConcerningShouldNeverHappen:
+            Log.warn("Weird unexpected reader error. Should not have happened")
+            return "Weird unexpected reader error. Should not have happened"
+        case .cannotCreatePCMBufferWithoutConverter:
+            Log.debug("Could not create a PCM Buffer because reader does not have a converter yet")
+            return "Could not create a PCM Buffer because reader does not have a converter yet"
+        case .throttleParsingBuffersForEngine:
+            Log.warn("Preventing the reader from creating more PCM buffers since the player has more than 60 seconds of audio already to play")
+            return "Preventing the reader from creating more PCM buffers since the player has more than 60 seconds of audio already to play"
+        case .failedToCreateParser:
+            Log.warn("Could not create a parser")
+            return "Could not create a parser"
+        }
+    }
+
+    func localizedDescriptionFromConverterError(_ status: OSStatus) -> String {
+        switch status {
+        case kAudioConverterErr_FormatNotSupported:
+            return "Format not supported"
+        case kAudioConverterErr_OperationNotSupported:
+            return "Operation not supported"
+        case kAudioConverterErr_PropertyNotSupported:
+            return "Property not supported"
+        case kAudioConverterErr_InvalidInputSize:
+            return "Invalid input size"
+        case kAudioConverterErr_InvalidOutputSize:
+            return "Invalid output size"
+        case kAudioConverterErr_BadPropertySizeError:
+            return "Bad property size error"
+        case kAudioConverterErr_RequiresPacketDescriptionsError:
+            return "Requires packet descriptions"
+        case kAudioConverterErr_InputSampleRateOutOfRange:
+            return "Input sample rate out of range"
+        case kAudioConverterErr_OutputSampleRateOutOfRange:
+            return "Output sample rate out of range"
+        case kAudioConverterErr_HardwareInUse:
+            return "Hardware is in use"
+        case kAudioConverterErr_NoHardwarePermission:
+            return "No hardware permission"
+        default:
+            return "Unspecified error"
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterListener.swift b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterListener.swift
new file mode 100644
index 000000000..09abcac8a
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Converter/AudioConverterListener.swift
@@ -0,0 +1,107 @@
+//
+//  AudioConverterListener.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AudioToolbox
+import AVFoundation
+import Foundation
+
+func ConverterListener(_: AudioConverterRef, _ packetCount: UnsafeMutablePointer<UInt32>, _ ioData: UnsafeMutablePointer<AudioBufferList>, _ outPacketDescriptions: UnsafeMutablePointer<UnsafeMutablePointer<AudioStreamPacketDescription>?>?, _ context: UnsafeMutableRawPointer?) -> OSStatus {
+    let selfAudioConverter = Unmanaged<AudioConverter>.fromOpaque(context!).takeUnretainedValue()
+
+    guard let parser = selfAudioConverter.parser else {
+        Log.monitor("ReaderMissingParserError")
+        return ReaderMissingParserError
+    }
+
+    guard let fileAudioFormat = parser.fileAudioFormat else {
+        Log.monitor("ReaderMissingSourceFormatError")
+        return ReaderMissingSourceFormatError
+    }
+
+    var audioPacketFromParser: (AudioStreamPacketDescription?, Data)?
+    do {
+        audioPacketFromParser = try parser.pullPacket(atIndex: selfAudioConverter.currentAudioPacketIndex)
+        Log.debug("received packet from parser at index: \(selfAudioConverter.currentAudioPacketIndex)")
+    } catch ParserError.notEnoughDataForReader {
+        return ReaderNotEnoughDataError
+    } catch ParserError.readerAskingBeyondEndOfFile {
+        // On output, the number of packets of audio data provided for conversion,
+        // or 0 if there is no more data to convert.
+        packetCount.pointee = 0
+        return ReaderReachedEndOfDataError
+    } catch {
+        return ReaderShouldNotHappenError
+    }
+
+    guard let audioPacket = audioPacketFromParser else {
+        return ReaderShouldNotHappenError
+    }
+
+    if let lastBuffer = selfAudioConverter.converterBuffer {
+        lastBuffer.deallocate()
+    }
+
+    // Copy data over (note we've only processing a single packet of data at a time)
+    var packet = audioPacket.1
+    let packetByteCount = packet.count // this is not the count of an array
+    ioData.pointee.mNumberBuffers = 1
+    ioData.pointee.mBuffers.mData = UnsafeMutableRawPointer.allocate(byteCount: packetByteCount, alignment: 0)
+    _ = packet.accessMutableBytes { (bytes: UnsafeMutablePointer<UInt8>) in
+        memcpy((ioData.pointee.mBuffers.mData?.assumingMemoryBound(to: UInt8.self))!, bytes, packetByteCount)
+    }
+    ioData.pointee.mBuffers.mDataByteSize = UInt32(packetByteCount)
+
+    selfAudioConverter.converterBuffer = ioData.pointee.mBuffers.mData
+
+    // Handle packet descriptions for compressed formats (MP3, AAC, etc)
+    let fileFormatDescription = fileAudioFormat.streamDescription.pointee
+    if fileFormatDescription.mFormatID != kAudioFormatLinearPCM {
+        if outPacketDescriptions?.pointee == nil {
+            if let lastDescription = selfAudioConverter.converterDescriptions {
+                lastDescription.deallocate()
+            }
+
+            outPacketDescriptions?.pointee = UnsafeMutablePointer<AudioStreamPacketDescription>.allocate(capacity: 1)
+        }
+        outPacketDescriptions?.pointee?.pointee.mDataByteSize = UInt32(packetByteCount)
+        outPacketDescriptions?.pointee?.pointee.mStartOffset = 0
+        outPacketDescriptions?.pointee?.pointee.mVariableFramesInPacket = 0
+    }
+
+    selfAudioConverter.converterDescriptions = outPacketDescriptions?.pointee
+
+    packetCount.pointee = 1
+
+    // we've successfully given a packet to the LPCM buffer now we can process the next audio packet
+    selfAudioConverter.currentAudioPacketIndex = selfAudioConverter.currentAudioPacketIndex + 1
+
+    return noErr
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParsable.swift b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParsable.swift
new file mode 100644
index 000000000..f9df664f6
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParsable.swift
@@ -0,0 +1,55 @@
+//
+//  AudioParsable.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+protocol AudioParsable { // For the layer above us
+    var fileAudioFormat: AVAudioFormat? { get }
+    var totalPredictedPacketCount: AVAudioPacketCount { get }
+    func tellSeek(toIndex index: AVAudioPacketCount)
+    func pollRangeOfSecondsAvailableFromNetwork() -> (Needle, Duration)
+    func pullPacket(atIndex index: AVAudioPacketCount) throws -> (AudioStreamPacketDescription?, Data)
+    func invalidate() // deinit caused concurrency problems
+}
+
+extension AudioParsable { // For the layer above us
+    var predictedDuration: Duration? {
+        guard let sampleRate = fileAudioFormat?.sampleRate else { return nil }
+        guard let totalPredictedFrameCount = totalPredictedAudioFrameCount else { return nil }
+        return Duration(totalPredictedFrameCount) / Duration(sampleRate)
+    }
+
+    var totalPredictedAudioFrameCount: AUAudioFrameCount? {
+        guard let framesPerPacket = fileAudioFormat?.streamDescription.pointee.mFramesPerPacket else { return nil }
+        return AVAudioFrameCount(totalPredictedPacketCount) * AVAudioFrameCount(framesPerPacket)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParser.swift b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParser.swift
new file mode 100644
index 000000000..49b07fa16
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParser.swift
@@ -0,0 +1,381 @@
+//
+//  AudioParser.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+/**
+ DEFINITIONS
+
+ An audio stream is a continuous series of data that represents a sound, such as a song.
+
+ A channel is a discrete track of monophonic audio. A monophonic stream has one channel; a stereo stream has two channels.
+
+ A sample is single numerical value for a single audio channel in an audio stream.
+
+ A frame is a collection of time-coincident samples. For instance, a linear PCM stereo sound file has two samples per frame, one for the left channel and one for the right channel.
+
+ A packet is a collection of one or more contiguous frames. A packet defines the smallest meaningful set of frames for a given audio data format, and is the smallest data unit for which time can be measured. In linear PCM audio, a packet holds a single frame. In compressed formats, it typically holds more; in some formats, the number of frames per packet varies.
+
+ The sample rate for a stream is the number of frames per second of uncompressed (or, for compressed formats, the equivalent in decompressed) audio.
+
+ */
+
+// TODO: what if user seeks beyond the data we have? What if we're done but user seeks even further than what we have
+
+class AudioParser: AudioParsable {
+    private var MIN_PACKETS_TO_HAVE_AVAILABLE_BEFORE_THROTTLING_PARSING = 8192 // this will be modified when we know the file format to be just enough packets to fill up 1 pcm buffer
+    private var framesPerBuffer: Int = 1
+
+    // MARK: - For OS parser class
+
+    var parsedAudioHeaderPacketCount: UInt64 = 0
+    var parsedAudioPacketDataSize: UInt64 = 0
+    var parsedAudioDataOffset: UInt64 = 0
+    var streamID: AudioFileStreamID?
+    public var fileAudioFormat: AVAudioFormat? {
+        didSet {
+            if let format = fileAudioFormat, oldValue == nil {
+                MIN_PACKETS_TO_HAVE_AVAILABLE_BEFORE_THROTTLING_PARSING = framesPerBuffer / Int(format.streamDescription.pointee.mFramesPerPacket)
+                parsedFileAudioFormatCallback(format)
+            }
+        }
+    }
+
+    // MARK: - Our vars
+
+    // Init
+    let url: AudioURL
+    var throttler: AudioThrottleable!
+
+    // Our use
+    var expectedFileSizeInBytes: UInt64?
+    var networkProgress: Double = 0
+    var parsedFileAudioFormatCallback: (AVAudioFormat) -> Void
+    var indexSeekOffset: AVAudioPacketCount = 0
+    var shouldPreventPacketFromFillingUp = false
+
+    public var totalPredictedPacketCount: AVAudioPacketCount {
+        if parsedAudioHeaderPacketCount != 0 {
+            // TODO: we should log the duration to the server for better user experience
+            return max(AVAudioPacketCount(parsedAudioHeaderPacketCount), AVAudioPacketCount(audioPackets.count))
+        }
+
+        let sizeOfFileInBytes: UInt64 = expectedFileSizeInBytes != nil ? expectedFileSizeInBytes! : 0
+
+        guard let bytesPerPacket = averageBytesPerPacket else {
+            return AVAudioPacketCount(0)
+        }
+
+        let predictedCount = AVAudioPacketCount(Double(sizeOfFileInBytes) / bytesPerPacket)
+
+        guard networkProgress != 1.0 else {
+            return min(AVAudioPacketCount(audioPackets.count), predictedCount)
+        }
+
+        return predictedCount
+    }
+
+    var sumOfParsedAudioBytes: UInt32 = 0
+    var numberOfPacketsParsed: UInt32 = 0
+    var audioPackets: [(AudioStreamPacketDescription?, Data)] = [] {
+        didSet {
+            if let audioPacketByteSize = audioPackets.last?.0?.mDataByteSize {
+                sumOfParsedAudioBytes += audioPacketByteSize
+            } else if let audioPacketByteSize = audioPackets.last?.1.count { // for uncompressed audio there are no descriptors to say how many bytes of audio are in this packet so we approximate by data size
+                sumOfParsedAudioBytes += UInt32(audioPacketByteSize)
+            }
+
+            numberOfPacketsParsed += 1
+
+            // TODO: duration will not be accurate with WAV or AIFF
+        }
+    }
+
+    private let lockQueue = DispatchQueue(label: "SwiftAudioPlayer.Parser.packets.lock")
+    var lastSentAudioPacketIndex = -1
+
+    /**
+     Audio packets varry in size. The first one parsed in a batch of audio
+     packets is usually off by 1 from the others. We use the
+     averageByesPerPacket for two things. 1. Predicting total audio packet count
+     which is used for duration. 2. Calculate seeking spot for throttler and
+     network seek. This used to be an Int but caused inacuracies for longer
+     podcasts. Since Double->Int is floored the parser would ask for byte 979312
+     but that spot is actually suppose to be 982280 from the throttler's perspective
+     */
+    var averageBytesPerPacket: Double? {
+        if numberOfPacketsParsed == 0 {
+            return nil
+        }
+
+        return Double(sumOfParsedAudioBytes) / Double(numberOfPacketsParsed)
+    }
+
+    var isParsingComplete: Bool {
+        guard fileAudioFormat != nil else {
+            return false
+        }
+        // TODO: will this ever return true? Predicted uses MAX of prediction of total packet length
+        return audioPackets.count == totalPredictedPacketCount
+    }
+
+    var streamChangeListenerId: UInt?
+
+    private var streamingDownloadDirector: StreamingDownloadDirector
+
+    init(withRemoteUrl url: AudioURL, bufferSize: Int, withAudioDataManager audioDataManager: AudioDataManager, withStreamingDownloadDirector streamingDownloadDirector: StreamingDownloadDirector, parsedFileAudioFormatCallback: @escaping (AVAudioFormat) -> Void) throws {
+        self.url = url
+        framesPerBuffer = bufferSize
+        self.parsedFileAudioFormatCallback = parsedFileAudioFormatCallback
+        self.streamingDownloadDirector = streamingDownloadDirector
+        throttler = AudioThrottler(withRemoteUrl: url, withDelegate: self, withAudioDataManager: audioDataManager, withStreamingDownloadDirector: streamingDownloadDirector)
+
+        streamChangeListenerId = streamingDownloadDirector.attach { [weak self] progress in
+            guard let self = self else { return }
+            self.networkProgress = progress
+
+            // initially parse a bunch of packets
+            self.lockQueue.sync {
+                if self.fileAudioFormat == nil {
+                    self.processNextDataPacket()
+                } else if self.audioPackets.count - self.lastSentAudioPacketIndex < self.MIN_PACKETS_TO_HAVE_AVAILABLE_BEFORE_THROTTLING_PARSING {
+                    self.processNextDataPacket()
+                }
+            }
+        }
+
+        let context = unsafeBitCast(self, to: UnsafeMutableRawPointer.self)
+        // Open the stream and when we call parse data is fed into this stream
+        guard AudioFileStreamOpen(context, ParserPropertyListener, ParserPacketListener, kAudioFileMP3Type, &streamID) == noErr else {
+            throw ParserError.couldNotOpenStream
+        }
+    }
+
+    deinit {
+        if let id = streamChangeListenerId {
+            streamingDownloadDirector.detach(withID: id)
+        }
+    }
+
+    func pullPacket(atIndex index: AVAudioPacketCount) throws -> (AudioStreamPacketDescription?, Data) {
+        determineIfMoreDataNeedsToBeParsed(index: index)
+
+        // Check if we've reached the end of the packets. We have two scenarios:
+        //     1. We've reached the end of the packet data and the file has been completely parsed
+        //     2. We've reached the end of the data we currently have downloaded, but not the file
+
+        let packetIndex = index - indexSeekOffset
+
+        var exception: ParserError?
+        var packet: (AudioStreamPacketDescription?, Data) = (nil, Data())
+        lockQueue.sync { [weak self] in
+            guard let self = self else {
+                return
+            }
+            if packetIndex >= self.audioPackets.count {
+                if isParsingComplete {
+                    exception = ParserError.readerAskingBeyondEndOfFile
+                    return
+                } else {
+                    Log.debug("Tried to pull packet at index: \(packetIndex) when only have: \(self.audioPackets.count), we predict \(self.totalPredictedPacketCount) in total")
+                    exception = ParserError.notEnoughDataForReader
+                    return
+                }
+            }
+
+            lastSentAudioPacketIndex = Int(packetIndex)
+            packet = audioPackets[Int(packetIndex)]
+        }
+        if let exception = exception {
+            throw exception
+        } else {
+            return packet
+        }
+    }
+
+    private func determineIfMoreDataNeedsToBeParsed(index: AVAudioPacketCount) {
+        lockQueue.sync { [weak self] in
+            guard let self = self else {
+                return
+            }
+            if index > self.audioPackets.count - self.MIN_PACKETS_TO_HAVE_AVAILABLE_BEFORE_THROTTLING_PARSING {
+                self.processNextDataPacket()
+            }
+        }
+    }
+
+    func tellSeek(toIndex index: AVAudioPacketCount) {
+        // Already within the processed audio packets. Ignore
+        var isIndexValid = true
+        lockQueue.sync { [weak self] in
+            guard let self = self else {
+                return
+            }
+            if self.indexSeekOffset <= index, index < self.audioPackets.count + Int(self.indexSeekOffset) {
+                isIndexValid = false
+            }
+        }
+        guard isIndexValid else { return }
+
+        guard let byteOffset = getOffset(fromPacketIndex: index) else {
+            return
+        }
+        Log.info("did not have processed audio for index: \(index) / offset: \(byteOffset)")
+
+        indexSeekOffset = index
+
+        // NOTE: Order matters. Need to prevent appending to the array before we clean it. Just in case
+        // then we tell the throttler to send us appropriate packet
+        shouldPreventPacketFromFillingUp = true
+        lockQueue.sync {
+            self.audioPackets = []
+        }
+
+        throttler.tellSeek(offset: byteOffset)
+        processNextDataPacket()
+    }
+
+    private func getOffset(fromPacketIndex index: AVAudioPacketCount) -> UInt64? {
+        // Clear current buffer if we have audio format
+        guard fileAudioFormat != nil, let bytesPerPacket = averageBytesPerPacket else {
+            Log.error("should not get here \(String(describing: fileAudioFormat)) and \(String(describing: averageBytesPerPacket))")
+            return nil
+        }
+
+        return UInt64(Double(index) * bytesPerPacket) + parsedAudioDataOffset
+    }
+
+    func pollRangeOfSecondsAvailableFromNetwork() -> (Needle, Duration) {
+        let range = throttler.pollRangeOfBytesAvailable()
+
+        let startPacket = getPacket(fromOffset: range.0) != nil ? getPacket(fromOffset: range.0)! : 0
+
+        guard let startFrame = getFrame(forPacket: startPacket), let startNeedle = getNeedle(forFrame: startFrame) else {
+            return (0, 0)
+        }
+
+        guard let endPacket = getPacket(fromOffset: range.1), let endFrame = getFrame(forPacket: endPacket), let endNeedle = getNeedle(forFrame: endFrame) else {
+            return (0, 0)
+        }
+
+        return (startNeedle, Duration(endNeedle))
+    }
+
+    private func getPacket(fromOffset offset: UInt64) -> AVAudioPacketCount? {
+        guard fileAudioFormat != nil, let bytesPerPacket = averageBytesPerPacket else { return nil }
+        let audioDataBytes = Int(offset) - Int(parsedAudioDataOffset)
+
+        guard audioDataBytes > 0 else { // Because we error out if we try to set a negative number as AVAudioPacketCount which is a UInt32
+            return nil
+        }
+
+        return AVAudioPacketCount(Double(audioDataBytes) / bytesPerPacket)
+    }
+
+    private func getFrame(forPacket packet: AVAudioPacketCount) -> AVAudioFrameCount? {
+        guard let framesPerPacket = fileAudioFormat?.streamDescription.pointee.mFramesPerPacket else { return nil }
+        return packet * framesPerPacket
+    }
+
+    private func getNeedle(forFrame frame: AVAudioFrameCount) -> Needle? {
+        guard let _ = fileAudioFormat?.streamDescription.pointee, let frameCount = totalPredictedAudioFrameCount, let duration = predictedDuration else { return nil }
+
+        guard duration > 0 else { return nil }
+
+        return Needle(TimeInterval(frame) / TimeInterval(frameCount) * duration)
+    }
+
+    func append(description: AudioStreamPacketDescription?, data: Data) {
+        lockQueue.sync {
+            self.audioPackets.append((description, data))
+        }
+    }
+
+    func invalidate() {
+        throttler.invalidate()
+
+        // FIXME: See Note below. Don't remove this until the problem has been properly solved
+        // if let sId = streamID {
+        //    let result = AudioFileStreamClose(sId)
+        //    if result != noErr {
+        //        Log.monitor("parser_error", ParserError.failedToParseBytes(result).errorDescription)
+        //    }
+        // }
+        /**
+         We saw a bad access in the parser. We think this is because AudioFileStreamClose is called before the parser finished parsing a set of networkPackets.
+
+         Three solutions we thought of:
+         1. Make parser a singleton and have callbacks that use and ID
+         2. Do some math on network data size and parsed packets. The parsed packets get 99.9% to the network data
+         3. Uncomment AudioFileStreamClose. There will be potential memory leaks
+
+         We chose option 3 because:
+         + we looked at memory hit and it was neglegible
+         + simplest solution
+         – we might forget about commenting this out  and run into a bug
+         */
+    }
+
+    private func processNextDataPacket() {
+        throttler.pullNextDataPacket { [weak self] d in
+            guard let self = self else { return }
+            guard let data = d else { return }
+
+            self.lockQueue.sync {
+                Log.debug("processing data count: \(data.count) :: already had \(self.audioPackets.count) audio packets")
+            }
+            self.shouldPreventPacketFromFillingUp = false
+            do {
+                let sID = self.streamID!
+                let dataSize = data.count
+
+                _ = try data.accessBytes { (bytes: UnsafePointer<UInt8>) in
+                    let result: OSStatus = AudioFileStreamParseBytes(sID, UInt32(dataSize), bytes, [])
+                    guard result == noErr else {
+                        Log.monitor(ParserError.failedToParseBytes(result).errorDescription as Any)
+                        throw ParserError.failedToParseBytes(result)
+                    }
+                }
+            } catch {
+                Log.monitor(error.localizedDescription)
+            }
+        }
+    }
+}
+
+// MARK: - AudioThrottleDelegate
+
+extension AudioParser: AudioThrottleDelegate {
+    func didUpdate(totalBytesExpected bytes: Int64) {
+        expectedFileSizeInBytes = UInt64(bytes)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserErrors.swift b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserErrors.swift
new file mode 100644
index 000000000..df90063aa
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserErrors.swift
@@ -0,0 +1,128 @@
+//
+//  AudioParserErrors.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+enum ParserError: LocalizedError {
+    case couldNotOpenStream
+    case failedToParseBytes(OSStatus)
+    case notEnoughDataForReader
+    case readerAskingBeyondEndOfFile
+
+    var errorDescription: String? {
+        switch self {
+        case .couldNotOpenStream:
+            return "Could not open stream for parsing"
+        case let .failedToParseBytes(status):
+            return localizedDescriptionFromParseError(status)
+        case .notEnoughDataForReader:
+            return "Not enough data for reader. Will attemp to seek"
+        case .readerAskingBeyondEndOfFile:
+            return "Reader asking for packets beyond the end of file"
+        }
+    }
+
+    func localizedDescriptionFromParseError(_ status: OSStatus) -> String {
+        switch status {
+        case kAudioFileStreamError_UnsupportedFileType:
+            return "The file type is not supported"
+        case kAudioFileStreamError_UnsupportedDataFormat:
+            return "The data format is not supported by this file type"
+        case kAudioFileStreamError_UnsupportedProperty:
+            return "The property is not supported"
+        case kAudioFileStreamError_BadPropertySize:
+            return "The size of the property data was not correct"
+        case kAudioFileStreamError_NotOptimized:
+            return "It is not possible to produce output packets because the file's packet table or other defining"
+        case kAudioFileStreamError_InvalidPacketOffset:
+            return "A packet offset was less than zero, or past the end of the file,"
+        case kAudioFileStreamError_InvalidFile:
+            return "The file is malformed, or otherwise not a valid instance of an audio file of its type, or is not recognized as an audio file"
+        case kAudioFileStreamError_ValueUnknown:
+            return "The property value is not present in this file before the audio data"
+        case kAudioFileStreamError_DataUnavailable:
+            return "The amount of data provided to the parser was insufficient to produce any result"
+        case kAudioFileStreamError_IllegalOperation:
+            return "An illegal operation was attempted"
+        default:
+            return "An unspecified error occurred"
+        }
+    }
+}
+
+/// This extension just helps us print out the name of an `AudioFileStreamPropertyID`. Purely for debugging and not essential to the main functionality of the parser.
+public extension AudioFileStreamPropertyID {
+    var description: String {
+        switch self {
+        case kAudioFileStreamProperty_ReadyToProducePackets:
+            return "Ready to produce packets"
+        case kAudioFileStreamProperty_FileFormat:
+            return "File format"
+        case kAudioFileStreamProperty_DataFormat:
+            return "Data format"
+        case kAudioFileStreamProperty_AudioDataByteCount:
+            return "Byte count"
+        case kAudioFileStreamProperty_AudioDataPacketCount:
+            return "Packet count"
+        case kAudioFileStreamProperty_DataOffset:
+            return "Data offset"
+        case kAudioFileStreamProperty_BitRate:
+            return "Bit rate"
+        case kAudioFileStreamProperty_FormatList:
+            return "Format list"
+        case kAudioFileStreamProperty_MagicCookieData:
+            return "Magic cookie"
+        case kAudioFileStreamProperty_MaximumPacketSize:
+            return "Max packet size"
+        case kAudioFileStreamProperty_ChannelLayout:
+            return "Channel layout"
+        case kAudioFileStreamProperty_PacketToFrame:
+            return "Packet to frame"
+        case kAudioFileStreamProperty_FrameToPacket:
+            return "Frame to packet"
+        case kAudioFileStreamProperty_PacketToByte:
+            return "Packet to byte"
+        case kAudioFileStreamProperty_ByteToPacket:
+            return "Byte to packet"
+        case kAudioFileStreamProperty_PacketTableInfo:
+            return "Packet table"
+        case kAudioFileStreamProperty_PacketSizeUpperBound:
+            return "Packet size upper bound"
+        case kAudioFileStreamProperty_AverageBytesPerPacket:
+            return "Average bytes per packet"
+        case kAudioFileStreamProperty_InfoDictionary:
+            return "Info dictionary"
+        default:
+            return "Unknown"
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPacketListener.swift b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPacketListener.swift
new file mode 100644
index 000000000..eb6e0336e
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPacketListener.swift
@@ -0,0 +1,80 @@
+//
+//  AudioParserPacketListener.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer, Moy Inzunza
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+#if swift(>=5.3)
+    func ParserPacketListener(_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>?) {
+        parserPacket(context, byteCount, packetCount, streamData, packetDescriptions)
+    }
+
+#else
+    func ParserPacketListener(_ context: UnsafeMutableRawPointer, _ byteCount: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>) {
+        parserPacket(context, byteCount, packetCount, streamData, packetDescriptions)
+    }
+#endif
+
+func parserPacket(_ context: UnsafeMutableRawPointer, _: UInt32, _ packetCount: UInt32, _ streamData: UnsafeRawPointer, _ packetDescriptions: UnsafeMutablePointer<AudioStreamPacketDescription>?) {
+    let selfAudioParser = Unmanaged<AudioParser>.fromOpaque(context).takeUnretainedValue()
+
+    guard let fileAudioFormat = selfAudioParser.fileAudioFormat else {
+        Log.monitor("should not have reached packet listener without a data format")
+        return
+    }
+
+    guard selfAudioParser.shouldPreventPacketFromFillingUp == false else {
+        Log.error("skipping parsing packets because of seek")
+        return
+    }
+
+    // TODO: refactor this after we get it working
+    if let compressedPacketDescriptions = packetDescriptions { // is compressed audio (.mp3)
+        Log.debug("compressed audio")
+        for i in 0 ..< Int(packetCount) {
+            let audioPacketDescription = compressedPacketDescriptions[i]
+            let audioPacketStart = Int(audioPacketDescription.mStartOffset)
+            let audioPacketSize = Int(audioPacketDescription.mDataByteSize)
+            let audioPacketData = Data(bytes: streamData.advanced(by: audioPacketStart), count: audioPacketSize)
+            selfAudioParser.append(description: audioPacketDescription, data: audioPacketData)
+        }
+    } else { // not compressed audio (.wav)
+        Log.debug("uncompressed audio")
+        let format = fileAudioFormat.streamDescription.pointee
+        let bytesPerAudioPacket = Int(format.mBytesPerPacket)
+        for i in 0 ..< Int(packetCount) {
+            let audioPacketStart = i * bytesPerAudioPacket
+            let audioPacketSize = bytesPerAudioPacket
+            let audioPacketData = Data(bytes: streamData.advanced(by: audioPacketStart), count: audioPacketSize)
+            selfAudioParser.append(description: nil, data: audioPacketData)
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPropertyListener.swift b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPropertyListener.swift
new file mode 100644
index 000000000..502a1a3d3
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/Parser/AudioParserPropertyListener.swift
@@ -0,0 +1,73 @@
+//
+//  AudioParserPropertyListener.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  This file was modified and adapted from https://github.com/syedhali/AudioStreamer
+//  which was released under Apache License 2.0. Apache License 2.0 requires explicit
+//  documentation of modified files from source and a copy of the Apache License 2.0
+//  in the project which is under the name Credited_LICENSE.
+//
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+func ParserPropertyListener(_ context: UnsafeMutableRawPointer, _ streamId: AudioFileStreamID, _ propertyId: AudioFileStreamPropertyID, _: UnsafeMutablePointer<AudioFileStreamPropertyFlags>) {
+    let selfAudioParser = Unmanaged<AudioParser>.fromOpaque(context).takeUnretainedValue()
+
+    Log.info("audio file stream property: \(propertyId.description)")
+    switch propertyId {
+    case kAudioFileStreamProperty_DataFormat:
+        var fileAudioFormat = AudioStreamBasicDescription()
+        GetPropertyValue(&fileAudioFormat, streamId, propertyId)
+        selfAudioParser.fileAudioFormat = AVAudioFormat(streamDescription: &fileAudioFormat)
+    case kAudioFileStreamProperty_AudioDataPacketCount:
+        GetPropertyValue(&selfAudioParser.parsedAudioHeaderPacketCount, streamId, propertyId)
+    case kAudioFileStreamProperty_AudioDataByteCount:
+        GetPropertyValue(&selfAudioParser.parsedAudioPacketDataSize, streamId, propertyId)
+        selfAudioParser.expectedFileSizeInBytes = selfAudioParser.parsedAudioDataOffset + selfAudioParser.parsedAudioPacketDataSize
+    case kAudioFileStreamProperty_DataOffset:
+        GetPropertyValue(&selfAudioParser.parsedAudioDataOffset, streamId, propertyId)
+
+        if selfAudioParser.parsedAudioPacketDataSize != 0 {
+            selfAudioParser.expectedFileSizeInBytes = selfAudioParser.parsedAudioDataOffset + selfAudioParser.parsedAudioPacketDataSize
+        }
+
+    default:
+        break
+    }
+}
+
+// property is like the medatada of
+func GetPropertyValue<T>(_ value: inout T, _ streamId: AudioFileStreamID, _ propertyId: AudioFileStreamPropertyID) {
+    var propertySize: UInt32 = 0
+    guard AudioFileStreamGetPropertyInfo(streamId, propertyId, &propertySize, nil) == noErr else { // try to get the size of the property
+        Log.monitor("failed to get info for property:\(propertyId.description)")
+        return
+    }
+
+    guard AudioFileStreamGetProperty(streamId, propertyId, &propertySize, &value) == noErr else {
+        Log.monitor("failed to get propery value for: \(propertyId.description)")
+        return
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/SAAudioAvailabilityRange.swift b/just_audio/ios/Classes/SAPlayer/Engine/SAAudioAvailabilityRange.swift
new file mode 100644
index 000000000..33d33dc8d
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/SAAudioAvailabilityRange.swift
@@ -0,0 +1,76 @@
+//
+//  SAAudioAvailabilityRange.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-02-18.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+// Think of it as the grey buffer line from youtube
+public struct SAAudioAvailabilityRange {
+    let startingNeedle: Needle
+    let durationLoadedByNetwork: Duration
+    let predictedDurationToLoad: Duration
+    let isPlayable: Bool
+
+    public var bufferingProgress: Double {
+        return (startingNeedle + durationLoadedByNetwork) / predictedDurationToLoad
+    }
+
+    public var startingBufferTimePositon: Double {
+        return startingNeedle
+    }
+
+    public var totalDurationBuffered: Double {
+        return durationLoadedByNetwork
+    }
+
+    public var isReadyForPlaying: Bool {
+        return isPlayable
+    }
+
+    var secondsLeftToBuffer: Double {
+        return predictedDurationToLoad - (startingNeedle + durationLoadedByNetwork)
+    }
+
+    public func contains(_ needle: Double) -> Bool {
+        return needle >= startingNeedle && (needle - startingNeedle) < durationLoadedByNetwork
+    }
+
+    public func reachedEndOfAudio(needle: Double) -> Bool {
+        var needleAtEnd = false
+
+        if totalDurationBuffered > 0, needle > 0 {
+            needleAtEnd = needle >= totalDurationBuffered - 5
+        }
+
+        // if most of the audio is buffered for long audio or in short audio there isn't many seconds left to buffer it means wwe've reached the end of the audio
+
+        let isBuffered = (bufferingProgress > 0.99 || secondsLeftToBuffer < 5)
+
+        return isBuffered && needleAtEnd
+    }
+
+    public func isCompletelyBuffered() -> Bool {
+        return startingNeedle + durationLoadedByNetwork >= predictedDurationToLoad
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Engine/SAPlayingStatus.swift b/just_audio/ios/Classes/SAPlayer/Engine/SAPlayingStatus.swift
new file mode 100644
index 000000000..b1bf2fe38
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Engine/SAPlayingStatus.swift
@@ -0,0 +1,33 @@
+//
+//  SAPlayingStatus.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-11-24.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+public enum SAPlayingStatus {
+    case playing
+    case paused
+    case buffering
+    case ended
+}
diff --git a/just_audio/ios/Classes/SAPlayer/LockScreenViewProtocol.swift b/just_audio/ios/Classes/SAPlayer/LockScreenViewProtocol.swift
new file mode 100644
index 000000000..236298638
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/LockScreenViewProtocol.swift
@@ -0,0 +1,194 @@
+//
+//  LockScreenViewProtocol.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+import MediaPlayer
+import UIKit
+
+public protocol LockScreenViewPresenter: AnyObject {
+    func getIsPlaying() -> Bool
+    func handlePlay()
+    func handlePause()
+    func handleSkipBackward()
+    func handleSkipForward()
+    func handleSeek(toNeedle needle: Double)
+}
+
+// MARK: - Set up lockscreen audio controls
+
+// Documentation: https://developer.apple.com/documentation/avfoundation/media_assets_playback_and_editing/creating_a_basic_video_player_ios_and_tvos/controlling_background_audio
+public protocol LockScreenViewProtocol {
+    var skipForwardSeconds: Double { get set }
+    var skipBackwardSeconds: Double { get set }
+}
+
+public extension LockScreenViewProtocol {
+    func clearLockScreenInfo() {
+        MPNowPlayingInfoCenter.default().nowPlayingInfo = [:]
+        let commandCenter = MPRemoteCommandCenter.shared()
+        commandCenter.playCommand.removeTarget(nil)
+        commandCenter.pauseCommand.removeTarget(nil)
+        commandCenter.skipBackwardCommand.removeTarget(nil)
+        commandCenter.skipForwardCommand.removeTarget(nil)
+        commandCenter.changePlaybackPositionCommand.removeTarget(nil)
+    }
+
+    @available(iOS 10.0, tvOS 10.0, *)
+    func setLockScreenInfo(withMediaInfo info: SALockScreenInfo?, duration: Double) {
+        var nowPlayingInfo: [String: Any] = [:]
+
+        guard let info = info else {
+            MPNowPlayingInfoCenter.default().nowPlayingInfo = [:]
+            return
+        }
+
+        let title = info.title
+        let artist = info.artist
+        let albumTitle = info.albumTitle ?? artist
+        let releaseDate = info.releaseDate
+
+        // For some reason we need to set a duration here for the needle?
+        nowPlayingInfo[MPMediaItemPropertyPlaybackDuration] = NSNumber(floatLiteral: duration)
+
+        nowPlayingInfo[MPMediaItemPropertyTitle] = title
+        nowPlayingInfo[MPMediaItemPropertyArtist] = artist
+        nowPlayingInfo[MPMediaItemPropertyAlbumTitle] = albumTitle
+        // nowPlayingInfo[MPMediaItemPropertyGenre] = //maybe later when we have it
+        // nowPlayingInfo[MPMediaItemPropertyIsExplicit] = //maybe later when we have it
+        nowPlayingInfo[MPMediaItemPropertyAlbumArtist] = artist
+        nowPlayingInfo[MPMediaItemPropertyMediaType] = MPMediaType.podcast.rawValue
+        nowPlayingInfo[MPMediaItemPropertyPodcastTitle] = title
+        nowPlayingInfo[MPNowPlayingInfoPropertyPlaybackRate] = 0.0 // because default is 1.0. If we pause audio then it keeps ticking
+        nowPlayingInfo[MPMediaItemPropertyReleaseDate] = Date(timeIntervalSince1970: TimeInterval(releaseDate))
+
+        if let artwork = info.artwork {
+            nowPlayingInfo[MPMediaItemPropertyArtwork] =
+                MPMediaItemArtwork(boundsSize: artwork.size) { _ in
+                    artwork
+                }
+        } else {
+            nowPlayingInfo[MPMediaItemPropertyArtwork] = MPMediaItemArtwork(boundsSize: UIImage().size) { _ in
+                UIImage()
+            }
+        }
+
+        MPNowPlayingInfoCenter.default().nowPlayingInfo = nowPlayingInfo
+    }
+
+    // https://stackoverflow.com/questions/36754934/update-mpremotecommandcenter-play-pause-button
+    func setLockScreenControls(presenter: LockScreenViewPresenter) {
+        // Get the shared MPRemoteCommandCenter
+        let commandCenter = MPRemoteCommandCenter.shared()
+
+        // Add handler for Play Command
+        commandCenter.playCommand.addTarget { [weak presenter] _ in
+            guard let presenter = presenter else {
+                return .commandFailed
+            }
+
+            if !presenter.getIsPlaying() {
+                presenter.handlePlay()
+                return .success
+            }
+
+            return .commandFailed
+        }
+
+        // Add handler for Pause Command
+        commandCenter.pauseCommand.addTarget { [weak presenter] _ in
+            guard let presenter = presenter else {
+                return .commandFailed
+            }
+
+            if presenter.getIsPlaying() {
+                presenter.handlePause()
+                return .success
+            }
+
+            return .commandFailed
+        }
+
+        commandCenter.skipBackwardCommand.preferredIntervals = [skipBackwardSeconds] as [NSNumber]
+        commandCenter.skipForwardCommand.preferredIntervals = [skipForwardSeconds] as [NSNumber]
+
+        commandCenter.skipBackwardCommand.addTarget { [weak presenter] _ in
+            guard let presenter = presenter else {
+                return .commandFailed
+            }
+            presenter.handleSkipBackward()
+            return .success
+        }
+
+        commandCenter.skipForwardCommand.addTarget { [weak presenter] _ in
+            guard let presenter = presenter else {
+                return .commandFailed
+            }
+            presenter.handleSkipForward()
+            return .success
+        }
+
+        commandCenter.changePlaybackPositionCommand.addTarget { [weak presenter] event in
+            guard let presenter = presenter else {
+                return .commandFailed
+            }
+            if let positionEvent = event as? MPChangePlaybackPositionCommandEvent {
+                presenter.handleSeek(toNeedle: Needle(positionEvent.positionTime))
+                return .success
+            }
+
+            return .commandFailed
+        }
+    }
+
+    func updateLockScreenElapsedTime(needle: Double) {
+        MPNowPlayingInfoCenter.default().nowPlayingInfo?[MPNowPlayingInfoPropertyElapsedPlaybackTime] = NSNumber(value: Double(needle))
+    }
+
+    func updateLockScreenPlaybackDuration(duration: Double) {
+        MPNowPlayingInfoCenter.default().nowPlayingInfo?[MPMediaItemPropertyPlaybackDuration] = NSNumber(value: duration)
+    }
+
+    func updateLockScreenPaused() {
+        MPNowPlayingInfoCenter.default().nowPlayingInfo?[MPNowPlayingInfoPropertyPlaybackRate] = 0.0
+    }
+
+    func updateLockScreenPlaying() {
+        MPNowPlayingInfoCenter.default().nowPlayingInfo?[MPNowPlayingInfoPropertyPlaybackRate] = 1.0
+    }
+
+    func updateLockScreenChangePlaybackRate(speed: Float) {
+        if speed > 0.0 {
+            MPNowPlayingInfoCenter.default().nowPlayingInfo?[MPNowPlayingInfoPropertyPlaybackRate] = speed
+        }
+    }
+
+    func updateLockScreenSkipIntervals() {
+        let commandCenter = MPRemoteCommandCenter.shared()
+        commandCenter.skipBackwardCommand.isEnabled = skipBackwardSeconds > 0
+        commandCenter.skipBackwardCommand.preferredIntervals = [skipBackwardSeconds] as [NSNumber]
+        commandCenter.skipForwardCommand.isEnabled = skipForwardSeconds > 0
+        commandCenter.skipForwardCommand.preferredIntervals = [skipForwardSeconds] as [NSNumber]
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/AudioDataManager.swift b/just_audio/ios/Classes/SAPlayer/Model/AudioDataManager.swift
new file mode 100644
index 000000000..c09b4787b
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/AudioDataManager.swift
@@ -0,0 +1,242 @@
+//
+//  AudioDataManager.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+protocol AudioDataManagable {
+    var numberOfQueued: Int { get }
+    var numberOfActive: Int { get }
+
+    var allowCellular: Bool { get set }
+    var downloadDirectory: FileManager.SearchPathDirectory { get }
+
+    func setHTTPHeaderFields(_ fields: [String: String]?)
+    func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> Void)
+    func setAllowCellularDownloadPreference(_ preference: Bool)
+    func setDownloadDirectory(_ dir: FileManager.SearchPathDirectory)
+
+    func clear()
+
+    // Director pattern
+    func attach(callback: @escaping (_ id: ID, _ progress: Double) -> Void)
+
+    func startStream(withRemoteURL url: AudioURL, callback: @escaping (StreamProgressPTO) -> Void) // called by throttler
+    func pauseStream(withRemoteURL url: AudioURL)
+    func resumeStream(withRemoteURL url: AudioURL)
+    func seekStream(withRemoteURL url: AudioURL, toByteOffset offset: UInt64)
+    func deleteStream(withRemoteURL url: AudioURL)
+
+    func getPersistedUrl(withRemoteURL url: AudioURL) -> URL?
+    func startDownload(withRemoteURL url: AudioURL, completion: @escaping (URL, Error?) -> Void)
+    func cancelDownload(withRemoteURL url: AudioURL)
+    func deleteDownload(withLocalURL url: URL)
+}
+
+public class AudioDataManager: AudioDataManagable {
+    var allowCellular: Bool = true
+    var downloadDirectory: FileManager.SearchPathDirectory = .documentDirectory
+
+    // When we're streaming we want to stagger the size of data push up from disk to prevent the phone from freezing. We push up data of this chunk size every couple milliseconds.
+    private let MAXIMUM_DATA_SIZE_TO_PUSH = 37744
+    private let TIME_IN_BETWEEN_STREAM_DATA_PUSH = 198
+
+    var backgroundCompletion: () -> Void = {} // set by AppDelegate
+
+    // This is the first case where a DAO passes a closure to a singleon that receives delegate calls from the OS. When the delegate from the OS is called, this class calls the DAO's closure. We pretty much set up a stream from the delegate call to the director (and all the items subscribed to that director)
+    private var globalDownloadProgressCallback: (String, Double) -> Void = { _, _ in }
+
+    private var downloadWorker: AudioDataDownloadable!
+    private var streamWorker: AudioDataStreamable!
+
+    private var streamingCallbacks = [(ID, (StreamProgressPTO) -> Void)]()
+
+    private var originalDataCountForDownloadedAudio = 0
+
+    var numberOfQueued: Int {
+        return downloadWorker.numberOfQueued
+    }
+
+    var numberOfActive: Int {
+        return downloadWorker.numberOfActive
+    }
+
+    public init() {
+        downloadWorker = AudioDownloadWorker(
+            allowCellular: allowCellular,
+            withAudioDataManager: self,
+            progressCallback: downloadProgressListener,
+            doneCallback: downloadDoneListener,
+            backgroundDownloadCallback: backgroundCompletion
+        )
+
+        streamWorker = AudioStreamWorker(
+            progressCallback: streamProgressListener,
+            doneCallback: streamDoneListener
+        )
+    }
+
+    func clear() {
+        streamingCallbacks = []
+    }
+
+    func setHTTPHeaderFields(_ fields: [String: String]?) {
+        streamWorker.HTTPHeaderFields = fields
+        downloadWorker.HTTPHeaderFields = fields
+    }
+
+    func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> Void) {
+        backgroundCompletion = completionHandler
+    }
+
+    func setAllowCellularDownloadPreference(_ preference: Bool) {
+        allowCellular = preference
+    }
+
+    func setDownloadDirectory(_ dir: FileManager.SearchPathDirectory) {
+        downloadDirectory = dir
+    }
+
+    func attach(callback: @escaping (_ id: ID, _ progress: Double) -> Void) {
+        globalDownloadProgressCallback = callback
+    }
+}
+
+// MARK: - Streaming
+
+extension AudioDataManager {
+    func startStream(withRemoteURL url: AudioURL, callback: @escaping (StreamProgressPTO) -> Void) {
+        if let data = FileStorage.Audio.read(url.key, in: downloadDirectory) {
+            let dto = StreamProgressDTO(progress: 1.0, data: data, totalBytesExpected: Int64(data.count))
+            callback(StreamProgressPTO(dto: dto))
+            return
+        }
+
+        let exists = streamingCallbacks.contains { (cb: (ID, (StreamProgressPTO) -> Void)) -> Bool in
+            cb.0 == url.key
+        }
+
+        if !exists {
+            streamingCallbacks.append((url.key, callback))
+        }
+
+        downloadWorker.stop(withID: url.key) { [weak self] (fetchedData: Data?, totalBytesExpected: Int64?) in
+            self?.downloadWorker.pauseAllActive()
+            self?.streamWorker.start(withID: url.key, withRemoteURL: url, withInitialData: fetchedData, andTotalBytesExpectedPreviously: totalBytesExpected)
+        }
+    }
+
+    func pauseStream(withRemoteURL url: AudioURL) {
+        guard streamWorker.getRunningID() == url.key else { return }
+        streamWorker.pause(withId: url.key)
+    }
+
+    func resumeStream(withRemoteURL url: AudioURL) {
+        streamWorker.resume(withId: url.key)
+    }
+
+    func seekStream(withRemoteURL url: AudioURL, toByteOffset offset: UInt64) {
+        streamWorker.seek(withId: url.key, withByteOffset: offset)
+    }
+
+    func deleteStream(withRemoteURL url: AudioURL) {
+        streamWorker.stop(withId: url.key)
+        streamingCallbacks.removeAll { (cb: (ID, (StreamProgressPTO) -> Void)) -> Bool in
+            cb.0 == url.key
+        }
+    }
+}
+
+// MARK: - Download
+
+extension AudioDataManager {
+    func getPersistedUrl(withRemoteURL url: AudioURL) -> URL? {
+        return FileStorage.Audio.locate(url.key, in: downloadDirectory)
+    }
+
+    func startDownload(withRemoteURL url: AudioURL, completion: @escaping (URL, Error?) -> Void) {
+        let key = url.key
+
+        if let savedUrl = FileStorage.Audio.locate(key, in: downloadDirectory), FileStorage.Audio.isStored(key, in: downloadDirectory) {
+            globalDownloadProgressCallback(key, 1.0)
+            completion(savedUrl, nil)
+            return
+        }
+
+        if let currentProgress = downloadWorker.getProgressOfDownload(withID: key) {
+            globalDownloadProgressCallback(key, currentProgress)
+            return
+        }
+
+        // TODO: check if we already streaming and convert streaming to download when we have persistent play button
+        guard streamWorker.getRunningID() != key else {
+            Log.debug("already streaming audio, don't need to download key: \(key)")
+            return
+        }
+
+        downloadWorker.start(withID: key, withRemoteUrl: url, completion: completion)
+    }
+
+    func cancelDownload(withRemoteURL url: AudioURL) {
+        downloadWorker.stop(withID: url.key, callback: nil)
+        FileStorage.Audio.delete(url.key, in: downloadDirectory)
+    }
+
+    func deleteDownload(withLocalURL url: URL) {
+        FileStorage.delete(url)
+    }
+}
+
+// MARK: - Listeners
+
+extension AudioDataManager {
+    private func downloadProgressListener(id: ID, progress: Double) {
+        globalDownloadProgressCallback(id, progress)
+    }
+
+    private func streamProgressListener(id: ID, dto: StreamProgressDTO) {
+        for c in streamingCallbacks {
+            if c.0 == id {
+                c.1(StreamProgressPTO(dto: dto))
+            }
+        }
+    }
+
+    private func downloadDoneListener(id: ID, error: Error?) {
+        if error != nil {
+            return
+        }
+
+        globalDownloadProgressCallback(id, 1.0)
+    }
+
+    private func streamDoneListener(id _: ID, error: Error?) -> Bool {
+        if error != nil {
+            return false
+        }
+
+        downloadWorker.resumeAllActive()
+        return false
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/AudioQueue.swift b/just_audio/ios/Classes/SAPlayer/Model/AudioQueue.swift
new file mode 100644
index 000000000..8925b376a
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/AudioQueue.swift
@@ -0,0 +1,34 @@
+//
+//  AudioQueue.swift
+//  SwiftAudioPlayer
+//
+//  Created by Joe Williams on 3/10/21.
+//
+
+import Foundation
+
+// wrapper for array of urls
+struct AudioQueue<T> {
+    private var audioUrls: [T] = []
+
+    var isQueueEmpty: Bool {
+        return audioUrls.isEmpty
+    }
+
+    var count: Int {
+        return audioUrls.count
+    }
+
+    var front: T? {
+        return audioUrls.first
+    }
+
+    mutating func append(item: T) {
+        audioUrls.append(item)
+    }
+
+    mutating func dequeue() -> T? {
+        guard !isQueueEmpty else { return nil }
+        return audioUrls.removeFirst()
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/Downloading/AudioDownloadWorker.swift b/just_audio/ios/Classes/SAPlayer/Model/Downloading/AudioDownloadWorker.swift
new file mode 100644
index 000000000..9c242a375
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/Downloading/AudioDownloadWorker.swift
@@ -0,0 +1,388 @@
+//
+//  AudioDownloadWorker.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+protocol AudioDataDownloadable: AnyObject {
+    init(allowCellular: Bool, withAudioDataManager audioDataManager: AudioDataManager, progressCallback: @escaping (_ id: ID, _ progress: Double) -> Void, doneCallback: @escaping (_ id: ID, _ error: Error?) -> Void, backgroundDownloadCallback: @escaping () -> Void)
+
+    var numberOfActive: Int { get }
+    var numberOfQueued: Int { get }
+
+    var HTTPHeaderFields: [String: String]? { get set }
+
+    func getProgressOfDownload(withID id: ID) -> Double?
+
+    func start(withID id: ID, withRemoteUrl remoteUrl: URL, completion: @escaping (URL, Error?) -> Void)
+    func stop(withID id: ID, callback: ((_ dataSoFar: Data?, _ totalBytesExpected: Int64?) -> Void)?)
+    func pauseAllActive() // Because of streaming
+    func resumeAllActive() // Because of streaming
+}
+
+class AudioDownloadWorker: NSObject, AudioDataDownloadable {
+    private let MAX_CONCURRENT_DOWNLOADS = 3
+
+    // Given by the AppDelegate
+    private let backgroundCompletion: () -> Void
+
+    private let progressHandler: (ID, Double) -> Void
+    private let completionHandler: (ID, Error?) -> Void
+
+    private let allowsCellularDownload: Bool
+    private lazy var session: URLSession = {
+        let config = URLSessionConfiguration.background(withIdentifier: "SwiftAudioPlayer.background_downloader_\(Date.getUTC())")
+        config.isDiscretionary = !allowsCellularDownload
+        config.sessionSendsLaunchEvents = true
+        config.allowsCellularAccess = allowsCellularDownload
+        config.timeoutIntervalForRequest = 30
+        return URLSession(configuration: config, delegate: self, delegateQueue: nil)
+    }()
+
+    var HTTPHeaderFields: [String: String]?
+
+    private var activeDownloads: [ActiveDownload] = []
+    private var queuedDownloads = Set<DownloadInfo>()
+
+    var numberOfActive: Int {
+        return activeDownloads.count
+    }
+
+    var numberOfQueued: Int {
+        return queuedDownloads.count
+    }
+
+    private var audioDataManager: AudioDataManager
+
+    required init(allowCellular: Bool,
+                  withAudioDataManager audioDataManager: AudioDataManager,
+                  progressCallback: @escaping (_ id: ID, _ progress: Double) -> Void,
+                  doneCallback: @escaping (_ id: ID, _ error: Error?) -> Void,
+                  backgroundDownloadCallback: @escaping () -> Void)
+    {
+        Log.info("init with allowCellular: \(allowCellular)")
+        progressHandler = progressCallback
+        completionHandler = doneCallback
+        backgroundCompletion = backgroundDownloadCallback
+        allowsCellularDownload = allowCellular
+        self.audioDataManager = audioDataManager
+
+        super.init()
+    }
+
+    func getProgressOfDownload(withID id: ID) -> Double? {
+        return activeDownloads.filter { $0.info.id == id }.first?.progress
+    }
+
+    func start(withID id: ID, withRemoteUrl remoteUrl: URL, completion: @escaping (URL, Error?) -> Void) {
+        Log.info("startExternal paramID: \(id) activeDownloadIDs: \((activeDownloads.map { $0.info.id }).toLog)")
+        let temp = activeDownloads.filter { $0.info.id == id }.count
+        guard temp == 0 else {
+            return
+        }
+
+        let info = queuedDownloads.updatePreservingOldCompletionHandlers(withID: id, withRemoteUrl: remoteUrl, completion: completion)
+
+        start(withInfo: info)
+    }
+
+    fileprivate func start(withInfo info: DownloadInfo) {
+        Log.info("paramID: \(info.id) activeDownloadIDs: \((activeDownloads.map { $0.info.id }).toLog)")
+        let temp = activeDownloads.filter { $0.info.id == info.id }.count
+        guard temp == 0 else {
+            return
+        }
+
+        guard numberOfActive < MAX_CONCURRENT_DOWNLOADS else {
+            _ = queuedDownloads.updatePreservingOldCompletionHandlers(withID: info.id, withRemoteUrl: info.remoteUrl)
+            return
+        }
+
+        queuedDownloads.remove(info)
+
+        var request = URLRequest(url: info.remoteUrl)
+        HTTPHeaderFields?.forEach { request.setValue($1, forHTTPHeaderField: $0) }
+
+        let task: URLSessionDownloadTask = session.downloadTask(with: request)
+        task.taskDescription = info.id
+
+        let activeTask = ActiveDownload(info: info, task: task)
+
+        activeDownloads.append(activeTask)
+        activeTask.task.resume()
+    }
+
+    func pauseAllActive() {
+        Log.info("activeDownloadIDs: \((activeDownloads.map { $0.info.id }).toLog)")
+        for download in activeDownloads {
+            if download.task.state == .running {
+                download.task.suspend()
+            }
+        }
+    }
+
+    func resumeAllActive() {
+        Log.info("activeDownloadIDs: \((activeDownloads.map { $0.info.id }).toLog)")
+        for download in activeDownloads {
+            download.task.resume()
+        }
+    }
+
+    func stop(withID id: ID, callback: ((_ dataSoFar: Data?, _ totalBytesExpected: Int64?) -> Void)?) {
+        Log.info("paramId: \(id), activeDownloadIDs: \((activeDownloads.map { $0.info.id }).toLog)")
+        for download in activeDownloads {
+            if download.info.id == id, download.task.state == .running {
+                download.task.cancel { (_: Data?) in
+                    callback?(nil, nil)
+                    // Could not achieve this because this resume data isn't actually the data downloaded so far but instead metadata. Not sure how to get the actual data that download task is downloading
+                    //                    callback?(data, download.totalBytesExpected)
+                }
+                activeDownloads = activeDownloads.filter { $0.info.id != id }
+                return
+            }
+        }
+
+        queuedDownloads.remove(withMatchingId: id)
+        callback?(nil, nil)
+    }
+}
+
+extension AudioDownloadWorker: URLSessionDownloadDelegate {
+    func urlSession(_: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {
+        let activeTask = activeDownloads.filter { $0.task == downloadTask }.first
+
+        guard let task = activeTask else {
+            Log.monitor("could not find corresponding active download task when done downloading: \(downloadTask.currentRequest?.url?.absoluteString ?? "nil url")")
+            return
+        }
+
+        guard let fileType = downloadTask.response?.suggestedFilename?.pathExtension else {
+            Log.monitor("No file type exists for file from downloading.. id: \(downloadTask.taskDescription ?? "nil") :: url: \(task.info.remoteUrl) where it suggested filename: \(downloadTask.response?.suggestedFilename ?? "nil")")
+            return
+        }
+
+        let destinationUrl = FileStorage.Audio.getUrl(givenId: task.info.id, andFileExtension: fileType, in: audioDataManager.downloadDirectory)
+        Log.info("Writing download file with id: \(task.info.id) to file named: \(destinationUrl.lastPathComponent)")
+
+        // https://stackoverflow.com/questions/20251432/cant-move-file-after-background-download-no-such-file
+        // Apparently, the data of the temporary location get deleted outside of this function immediately, so others recommended extracting the data and writing it, this is why I'm not using DiskUtil
+        do {
+            _ = try FileManager.default.replaceItemAt(destinationUrl, withItemAt: location)
+
+            Log.info("Successful write file to url: \(destinationUrl.absoluteString)")
+            progressHandler(task.info.id, 1.0)
+        } catch {
+            if (error as NSError).code == NSFileWriteFileExistsError {
+                do {
+                    Log.info("File already existed at attempted download url: \(destinationUrl.absoluteString)")
+                    try FileManager.default.removeItem(at: destinationUrl)
+                    _ = try FileManager.default.replaceItemAt(destinationUrl, withItemAt: location)
+                    Log.info("Replaced previous file at url: \(destinationUrl.absoluteString)")
+                } catch {
+                    Log.monitor("Error moving file after download for task id: \(task.info.id) and error: \(error.localizedDescription)")
+                }
+            } else {
+                Log.monitor("Error moving file after download for task id: \(task.info.id) and error: \(error.localizedDescription)")
+            }
+        }
+
+        completionHandler(task.info.id, nil)
+
+        for handler in task.info.completionHandlers {
+            handler(destinationUrl, nil)
+        }
+
+        activeDownloads = activeDownloads.filter { $0 != task }
+
+        if let queued = queuedDownloads.popHighestRanked() {
+            start(withInfo: queued)
+        }
+    }
+
+    func urlSessionDidFinishEvents(forBackgroundURLSession _: URLSession) {
+        DispatchQueue.main.async {
+            self.backgroundCompletion()
+        }
+    }
+
+    func urlSession(_: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+        if let e = error {
+            if let err: NSError = error as NSError? {
+                if err.domain == NSURLErrorDomain && err.code == NSURLErrorCancelled {
+                    Log.info("cancelled downloading")
+                    return
+                }
+            }
+
+            if let err: NSError = error as NSError? {
+                if err.domain == NSPOSIXErrorDomain && err.code == 2 {
+                    Log.error("download error where file says it doesn't exist, this could be because of bad network")
+                    return
+                }
+            }
+
+            for download in activeDownloads {
+                if download.task == task {
+                    for handler in download.info.completionHandlers {
+                        handler(download.info.remoteUrl, e)
+                    }
+                    completionHandler(download.info.id, e)
+                    activeDownloads = activeDownloads.filter { $0.task != task }
+                }
+            }
+
+            Log.monitor("\(task.currentRequest?.url?.absoluteString ?? "nil url") error: \(e.localizedDescription)")
+        }
+    }
+
+    func urlSession(_: URLSession, downloadTask: URLSessionDownloadTask, didWriteData _: Int64, totalBytesWritten: Int64, totalBytesExpectedToWrite: Int64) {
+        var found = false
+
+        for download in activeDownloads {
+            if download.task == downloadTask {
+                found = true
+                download.progress = Double(totalBytesWritten) / Double(totalBytesExpectedToWrite)
+                download.totalBytesExpected = totalBytesExpectedToWrite
+                if download.progress != 1.0 {
+                    progressHandler(download.info.id, download.progress)
+                }
+            }
+        }
+
+        if !found {
+            Log.monitor("could not find active download when receiving progress updates")
+        }
+    }
+}
+
+// MARK: - Helpers
+
+extension AudioDownloadWorker {}
+
+// MARK: - Helper Classes
+
+extension AudioDownloadWorker {
+    fileprivate struct DownloadInfo: Hashable {
+        static func == (lhs: AudioDownloadWorker.DownloadInfo, rhs: AudioDownloadWorker.DownloadInfo) -> Bool {
+            return lhs.id == rhs.id && lhs.remoteUrl == rhs.remoteUrl
+        }
+
+        let id: ID
+        let remoteUrl: URL
+        let rank: Int
+        var completionHandlers: [(URL, Error?) -> Void]
+
+        func hash(into hasher: inout Hasher) {
+            hasher.combine(id)
+            hasher.combine(remoteUrl)
+        }
+    }
+
+    private class ActiveDownload: Hashable {
+        static func == (lhs: AudioDownloadWorker.ActiveDownload, rhs: AudioDownloadWorker.ActiveDownload) -> Bool {
+            return lhs.info.id == rhs.info.id
+        }
+
+        let info: DownloadInfo
+        var totalBytesExpected: Int64?
+        var progress: Double = 0.0
+        let task: URLSessionDownloadTask
+
+        init(info: DownloadInfo, task: URLSessionDownloadTask) {
+            self.info = info
+            self.task = task
+        }
+
+        func hash(into hasher: inout Hasher) {
+            hasher.combine(info.id)
+            hasher.combine(task)
+        }
+    }
+}
+
+extension Set where Element == AudioDownloadWorker.DownloadInfo {
+    mutating func popHighestRanked() -> AudioDownloadWorker.DownloadInfo? {
+        guard count > 0 else { return nil }
+
+        var ret: AudioDownloadWorker.DownloadInfo = first!
+
+        for info in self {
+            if info.rank > ret.rank {
+                ret = info
+            }
+        }
+
+        remove(ret)
+
+        return ret
+    }
+
+    mutating func updatePreservingOldCompletionHandlers(withID id: ID, withRemoteUrl remoteUrl: URL, completion: ((URL, Error?) -> Void)? = nil) -> AudioDownloadWorker.DownloadInfo {
+        let rank = Date.getUTC()
+
+        let tempHandlers: [(URL, Error?) -> Void] = completion != nil ? [completion!] : []
+
+        var newInfo = AudioDownloadWorker.DownloadInfo(id: id, remoteUrl: remoteUrl, rank: rank, completionHandlers: tempHandlers)
+
+        if let previous = update(with: newInfo) {
+            let prevHandlers = previous.completionHandlers
+            let newHandlers = prevHandlers + tempHandlers
+
+            newInfo = AudioDownloadWorker.DownloadInfo(id: id, remoteUrl: remoteUrl, rank: rank, completionHandlers: newHandlers)
+
+            update(with: newInfo)
+        }
+
+        return newInfo
+    }
+
+    mutating func remove(withMatchingId id: ID) {
+        var toRemove: AudioDownloadWorker.DownloadInfo?
+        var matchCount = 0
+
+        for item in enumerated() {
+            if item.element.id == id {
+                toRemove = item.element
+                matchCount += 1
+            }
+        }
+
+        guard matchCount <= 1 else {
+            Log.error("Found \(matchCount) matches of queued info with the same id of: \(id), this should have never happened.")
+            return
+        }
+
+        if let removeInfo = toRemove {
+            remove(removeInfo)
+        }
+    }
+}
+
+extension String {
+    var pathExtension: String? {
+        let cleaned = replacingOccurrences(of: " ", with: "_")
+        let ext = URL(string: cleaned)?.pathExtension
+        return ext == "" ? nil : ext
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/Downloading/FileStorage.swift b/just_audio/ios/Classes/SAPlayer/Model/Downloading/FileStorage.swift
new file mode 100644
index 000000000..1cff91ba0
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/Downloading/FileStorage.swift
@@ -0,0 +1,133 @@
+//
+//  FileStorage.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+/**
+ Utility class to access audio files saved on the phone.
+ */
+struct FileStorage {
+    private init() {}
+
+    /**
+     Generates a URL for a file that would be saved locally.
+
+     Note: It is not guaranteed that the file actually exists.
+     */
+    static func getUrl(givenAName name: NameFile, inDirectory dir: FileManager.SearchPathDirectory) -> URL {
+        let directoryPath = NSSearchPathForDirectoriesInDomains(dir, .userDomainMask, true)[0] as String
+        let url = URL(fileURLWithPath: directoryPath)
+        return url.appendingPathComponent(name)
+    }
+
+    static func isStored(_ url: URL) -> Bool {
+        // https://stackoverflow.com/questions/42897844/swift-3-0-filemanager-fileexistsatpath-always-return-false
+        // When determining if a file exists, we must use .path not .absolute string!
+        return FileManager.default.fileExists(atPath: url.path)
+    }
+
+    static func delete(_ url: URL) {
+        if !isStored(url) {
+            return
+        }
+
+        do {
+            try FileManager.default.removeItem(at: url)
+        } catch {
+            Log.error("Could not delete a file: \(error.localizedDescription)")
+        }
+    }
+}
+
+// MARK: - Audio
+
+extension FileStorage {
+    struct Audio {
+        private var audioDataManager: AudioDataManager
+
+        init(audioDataManager: AudioDataManager) {
+            self.audioDataManager = audioDataManager
+        }
+
+        static func isStored(_ id: ID, in directory: FileManager.SearchPathDirectory) -> Bool {
+            guard let url = locate(id, in: directory)?.path else {
+                return false
+            }
+
+            // FIXME: This is an unreliable API. Maybe use a map instead?
+            return FileManager.default.fileExists(atPath: url)
+        }
+
+        static func delete(_ id: ID, in directory: FileManager.SearchPathDirectory) {
+            guard let url = locate(id, in: directory) else {
+                Log.warn("trying to delete audio file that doesn't exist with id: \(id)")
+                return
+            }
+            return FileStorage.delete(url)
+        }
+
+        static func write(_ id: ID, fileExtension: String, data: Data, in directory: FileManager.SearchPathDirectory) {
+            do {
+                let url = FileStorage.getUrl(givenAName: getAudioFileName(id, fileExtension: fileExtension), inDirectory: directory)
+                try data.write(to: url)
+            } catch {
+                Log.monitor(error.localizedDescription)
+            }
+        }
+
+        static func read(_ id: ID, in directory: FileManager.SearchPathDirectory) -> Data? {
+            guard let url = locate(id, in: directory) else {
+                Log.debug("Trying to get data for audio file that doesn't exist: \(id)")
+                return nil
+            }
+            let data = try? Data(contentsOf: url)
+            return data
+        }
+
+        static func locate(_ id: ID, in directory: FileManager.SearchPathDirectory) -> URL? {
+            let folderUrls = FileManager.default.urls(for: directory, in: .userDomainMask)
+            guard folderUrls.count != 0 else { return nil }
+
+            if let urls = try? FileManager.default.contentsOfDirectory(at: folderUrls[0], includingPropertiesForKeys: nil) {
+                for url in urls {
+                    if url.absoluteString.contains(id) && url.pathExtension != "" {
+                        _ = getUrl(givenId: id, andFileExtension: url.pathExtension, in: directory)
+                        return url
+                    }
+                }
+            }
+            return nil
+        }
+
+        static func getUrl(givenId id: ID, andFileExtension fileExtension: String, in directory: FileManager.SearchPathDirectory) -> URL {
+            let url = FileStorage.getUrl(givenAName: getAudioFileName(id, fileExtension: fileExtension), inDirectory: directory)
+            return url
+        }
+
+        private static func getAudioFileName(_ id: ID, fileExtension: String) -> NameFile {
+            return "\(id).\(fileExtension)"
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/StreamProgressPTO.swift b/just_audio/ios/Classes/SAPlayer/Model/StreamProgressPTO.swift
new file mode 100644
index 000000000..8a4b1341a
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/StreamProgressPTO.swift
@@ -0,0 +1,42 @@
+//
+//  StreamProgressPTO.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+struct StreamProgressPTO {
+    let dto: StreamProgressDTO
+
+    func getProgress() -> Double {
+        return dto.progress
+    }
+
+    func getData() -> Data {
+        return dto.data
+    }
+
+    func getTotalBytesExpected() -> Int64? {
+        return dto.totalBytesExpected
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/Streaming/AudioStreamWorker.swift b/just_audio/ios/Classes/SAPlayer/Model/Streaming/AudioStreamWorker.swift
new file mode 100644
index 000000000..afa6f89a8
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/Streaming/AudioStreamWorker.swift
@@ -0,0 +1,340 @@
+//
+//  AudioStreamWorker.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+/**
+ init task
+ +
+ |
+ |
+ +-----v-----+     suspend()   +---------+          +-----------+
+ | suspended <-----------------> running +----------> completed |
+ +-----+-----+     resume()    +----+----+          +-----------+
+ |                            |
+ |                            | cancel()
+ |                            |
+ |          cancel()   +------v------+
+ +---------------------> cancelling  |
+ +-------------+
+ */
+
+protocol AudioDataStreamable {
+    // if user taps download then starts to stream
+    init(progressCallback: @escaping (_ id: ID, _ dto: StreamProgressDTO) -> Void, doneCallback: @escaping (_ id: ID, _ error: Error?) -> Bool) // Bool is should save or not
+
+    var HTTPHeaderFields: [String: String]? { get set }
+
+    func start(withID id: ID, withRemoteURL url: URL, withInitialData data: Data?, andTotalBytesExpectedPreviously previousTotalBytesExpected: Int64?)
+    func pause(withId id: ID)
+    func resume(withId id: ID)
+    func stop(withId id: ID) // FIXME: with persistent play we should return a Data so that download can resume
+    func seek(withId id: ID, withByteOffset offset: UInt64)
+    func getRunningID() -> ID?
+}
+
+/// Policy for streaming
+/// - only one stream at a time
+/// - starting a stream will cancel the previous
+/// - when seeking, assume that previous data is discarded
+class AudioStreamWorker: NSObject, AudioDataStreamable {
+    private let TIMEOUT = 60.0
+
+    fileprivate let progressCallback: (_ id: ID, _ dto: StreamProgressDTO) -> Void
+    // Will ony be called when the task object will no longer be active
+    // Why? So upper layer knows that current streaming activity for this ID is done
+    // Why? To know if we should persist the stream data assuming successful completion
+    fileprivate let doneCallback: (_ id: ID, _ error: Error?) -> Bool
+    private var session: URLSession!
+
+    var HTTPHeaderFields: [String: String]?
+
+    private var id: ID?
+    private var url: URL?
+    private var task: URLSessionDataTask?
+    private var previousTotalBytesExpectedFromInitalData: Int64?
+    private var initialDataBytesCount: Int64 = 0
+    fileprivate var totalBytesExpectedForWholeFile: Int64?
+    fileprivate var totalBytesExpectedForCurrentStream: Int64?
+    fileprivate var totalBytesReceived: Int64 = 0
+    private var corruptedBecauseOfSeek = false
+
+    /// Init
+    ///
+    /// - Parameters:
+    ///   - progressCallback: generic callback
+    ///   - doneCallback: when finished
+    required init(progressCallback: @escaping (_ id: ID, _ dto: StreamProgressDTO) -> Void, doneCallback: @escaping (_ id: ID, _ error: Error?) -> Bool) {
+        self.progressCallback = progressCallback
+        self.doneCallback = doneCallback
+        super.init()
+
+        let config = URLSessionConfiguration.background(withIdentifier: "SwiftAudioPlayer.stream")
+        // Specifies that the phone should keep trying till it receives connection instead of dropping immediately
+        if #available(iOS 11.0, tvOS 11.0, *) {
+            config.waitsForConnectivity = true
+        }
+        session = URLSession(configuration: config, delegate: self, delegateQueue: nil) // TODO: should we use ephemeral
+    }
+
+    func start(withID id: ID, withRemoteURL url: URL, withInitialData data: Data? = nil, andTotalBytesExpectedPreviously previousTotalBytesExpected: Int64? = nil) {
+        Log.info("selfID: \(self.id ?? "none"), paramID: \(id) initialData: \(data?.count ?? 0)")
+
+        killPreviousTaskIfNeeded()
+        self.id = id
+        self.url = url
+        previousTotalBytesExpectedFromInitalData = previousTotalBytesExpected
+
+        if let data = data {
+            var request = URLRequest(url: url, cachePolicy: .useProtocolCachePolicy, timeoutInterval: TIMEOUT)
+            HTTPHeaderFields?.forEach { request.setValue($1, forHTTPHeaderField: $0) }
+            request.addValue("bytes=\(data.count)-", forHTTPHeaderField: "Range")
+            task = session.dataTask(with: request)
+            task?.taskDescription = id
+
+            initialDataBytesCount = Int64(data.count)
+            totalBytesReceived = initialDataBytesCount
+            totalBytesExpectedForWholeFile = previousTotalBytesExpected
+
+            let progress = previousTotalBytesExpected != nil ? Double(initialDataBytesCount) / Double(previousTotalBytesExpected!) : 0
+
+            let dto = StreamProgressDTO(progress: progress, data: data, totalBytesExpected: totalBytesExpectedForWholeFile)
+
+            progressCallback(id, dto)
+
+            task?.resume()
+        } else {
+            var request = URLRequest(url: url)
+            HTTPHeaderFields?.forEach { request.setValue($1, forHTTPHeaderField: $0) }
+            task = session.dataTask(with: request)
+            task?.taskDescription = id
+            task?.resume()
+        }
+    }
+
+    private func killPreviousTaskIfNeeded() {
+        guard let task = task else { return }
+        if task.state == .running || task.state == .suspended {
+            task.cancel()
+        }
+        self.task = nil
+        corruptedBecauseOfSeek = false
+        totalBytesExpectedForWholeFile = nil
+        totalBytesReceived = 0
+        initialDataBytesCount = 0
+    }
+
+    func pause(withId id: ID) {
+        Log.info("selfID: \(self.id ?? "none"), paramID: \(id)")
+        guard self.id == id else {
+            Log.error("incorrect ID for command")
+            return
+        }
+
+        guard let task = task else {
+            Log.error("tried to stop a non-existent task")
+            return
+        }
+
+        if task.state == .running {
+            task.suspend()
+        } else {
+            Log.monitor("tried to pause a task that's already suspended")
+        }
+    }
+
+    func resume(withId id: ID) {
+        Log.info("selfID: \(self.id ?? "none"), paramID: \(id)")
+        guard self.id == id else {
+            Log.error("incorrect ID for command")
+            return
+        }
+
+        guard let task = task else {
+            Log.error("tried to resume a non-existent task")
+            return
+        }
+
+        if task.state == .suspended {
+            task.resume()
+        } else {
+            Log.monitor("tried to resume a non-suspended task")
+        }
+    }
+
+    func stop(withId id: ID) {
+        Log.info("selfID: \(self.id ?? "none"), paramID: \(id)")
+        guard self.id == id else {
+            Log.warn("incorrect ID for command")
+            return
+        }
+
+        guard let task = task else {
+            Log.error("tried to stop a non-existent task")
+            return
+        }
+
+        if task.state == .running || task.state == .suspended {
+            task.cancel()
+            self.task = nil
+        } else {
+            Log.error("stream_error tried to stop a task that's in state: \(task.state.rawValue)")
+        }
+    }
+
+    func seek(withId id: ID, withByteOffset offset: UInt64) {
+        Log.info("selfID: \(self.id ?? "none"), paramID: \(id), offset: \(offset)")
+        guard self.id == id else {
+            Log.error("incorrect ID for command")
+            return
+        }
+
+        guard let url = url else {
+            Log.monitor("tried to seek without having URL")
+            return
+        }
+        stop(withId: id)
+        totalBytesReceived = 0
+        corruptedBecauseOfSeek = true
+        progressCallback(id, StreamProgressDTO(progress: 0, data: Data(), totalBytesExpected: totalBytesExpectedForWholeFile))
+
+        var request = URLRequest(url: url, cachePolicy: .useProtocolCachePolicy, timeoutInterval: TIMEOUT)
+        HTTPHeaderFields?.forEach { request.setValue($1, forHTTPHeaderField: $0) }
+        request.addValue("bytes=\(offset)-", forHTTPHeaderField: "Range")
+        task = session.dataTask(with: request)
+        task?.resume()
+    }
+
+    func getRunningID() -> ID? {
+        if let task = task, task.state == .running, let id = id {
+            return id
+        }
+        return nil
+    }
+}
+
+// MARK: - URLSessionDataDelegate
+
+extension AudioStreamWorker: URLSessionDataDelegate {
+    func urlSession(_: URLSession, dataTask: URLSessionDataTask, didReceive data: Data) {
+        Log.debug("selfID: ", id, " dataTaskID: ", dataTask.taskDescription, " dataSize: ", data.count, " expected: ", totalBytesExpectedForWholeFile, " received: ", totalBytesReceived)
+        guard let id = id else {
+            // FIXME: should be an error when done with testing phase
+            Log.monitor("stream worker in weird state 9847467")
+            return
+        }
+
+        guard task == dataTask else {
+            Log.error("stream_error not the same task 638283") // Probably because of seek
+            return
+        }
+
+        guard var totalBytesExpected = totalBytesExpectedForCurrentStream else {
+            Log.monitor("should not be called 223r2")
+            return
+        }
+
+        if totalBytesExpected <= 0 {
+            totalBytesExpected = totalBytesReceived
+        }
+
+        totalBytesReceived = totalBytesReceived + Int64(data.count)
+        let progress = Double(totalBytesReceived) / Double(totalBytesExpected)
+
+        Log.debug("network streaming progress \(progress)")
+        progressCallback(id, StreamProgressDTO(progress: progress, data: data, totalBytesExpected: totalBytesExpected))
+    }
+
+    func urlSession(_: URLSession, dataTask: URLSessionDataTask, didReceive response: URLResponse, completionHandler: @escaping (URLSession.ResponseDisposition) -> Void) {
+        Log.debug(dataTask.taskDescription, id, response.description)
+        guard id != nil else {
+            Log.monitor("stream worker in weird state 2049jg3")
+            return
+        }
+
+        guard task == dataTask else {
+            Log.error("stream_error not the same task 517253")
+            return
+        }
+
+        Log.info("response length: \(response.expectedContentLength)")
+
+        // the value will smaller if you seek. But we want to hold the OG total for duration calculations
+        if !corruptedBecauseOfSeek {
+            totalBytesExpectedForWholeFile = response.expectedContentLength + initialDataBytesCount
+        }
+
+        totalBytesExpectedForCurrentStream = response.expectedContentLength
+        completionHandler(.allow)
+    }
+
+    func urlSession(_: URLSession, task: URLSessionTask, didCompleteWithError error: Error?) {
+        Log.debug(task.taskDescription, id)
+        guard let id = id else {
+            Log.error("stream_error stream worker in weird state 345b45")
+            return
+        }
+
+        if self.task != task && self.task != nil {
+            Log.error("stream_error not the same task 3901833")
+            return
+        }
+
+        if let err: NSError = error as NSError? {
+            if err.domain == NSURLErrorDomain && err.code == NSURLErrorCancelled {
+                Log.info("cancelled downloading")
+                let _ = doneCallback(id, nil)
+                return
+            }
+
+            if err.domain == NSURLErrorDomain && err.code == NSURLErrorNetworkConnectionLost {
+                Log.error("lost connection")
+                let _ = doneCallback(id, nil)
+                return
+            }
+
+            Log.monitor("\(task.currentRequest?.url?.absoluteString ?? "nil url") error: \(err.localizedDescription)")
+
+            _ = doneCallback(id, err)
+            return
+        }
+
+        let shouldSave = doneCallback(id, nil)
+        if shouldSave, !corruptedBecauseOfSeek {
+            // TODO: want to save file after streaming so we do not have to download again
+//            guard (task.response?.suggestedFilename?.pathExtension) != nil else {
+//                Log.monitor("Could not determine file type for file from id: \(task.taskDescription ?? "nil") and url: \(task.currentRequest?.url?.absoluteString ?? "nil")")
+//                return
+//            }
+
+            // TODO: no longer saving streamed files
+            //            FileStorage.Audio.write(id, fileExtension: fileType, data: data)
+        }
+    }
+
+    func urlSession(_: URLSession, taskIsWaitingForConnectivity _: URLSessionTask) {
+        // TODO: Notify to user that waiting for better connection
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Model/Streaming/StreamProgressDTO.swift b/just_audio/ios/Classes/SAPlayer/Model/Streaming/StreamProgressDTO.swift
new file mode 100644
index 000000000..2e62df5b5
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Model/Streaming/StreamProgressDTO.swift
@@ -0,0 +1,33 @@
+//
+//  StreamProgressDTO.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+// Just a helper because it got too messy
+struct StreamProgressDTO {
+    let progress: Double
+    let data: Data
+    let totalBytesExpected: Int64?
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayer.swift b/just_audio/ios/Classes/SAPlayer/SAPlayer.swift
new file mode 100644
index 000000000..b03402f1a
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayer.swift
@@ -0,0 +1,602 @@
+//
+//  SAPlayer.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+
+public class SAPlayer {
+    public var DEBUG_MODE: Bool = false {
+        didSet {
+            if DEBUG_MODE {
+                logLevel = LogLevel.EXTERNAL_DEBUG
+            } else {
+                logLevel = LogLevel.MONITOR
+            }
+        }
+    }
+
+    private var presenter: SAPlayerPresenter!
+    private var player: AudioEngine?
+    public let audioDataManager: AudioDataManager = .init()
+    public let audioClockDirector: AudioClockDirector = .init()
+    public let audioQueueDirector: AudioQueueDirector = .init()
+    public let streamingDownloadDirector: StreamingDownloadDirector = .init()
+
+    public private(set) lazy var downloader: Downloader = .init(player: self)
+    public private(set) lazy var updates: Updates = .init(player: self)
+    public private(set) lazy var downloadProgressDirector = DownloadProgressDirector(audioDataManager: audioDataManager)
+
+    /**
+     Access the engine of the player. Engine is nil if player has not been initialized with audio.
+
+      - Important: Changes to the engine are not safe guarded, thus unknown behaviour can arise from changing the engine. Just be wary and read [documentation of AVAudioEngine](https://developer.apple.com/documentation/avfoundation/avaudioengine) well when modifying,
+     */
+    public private(set) var engine: AVAudioEngine!
+
+    /**
+     Any necessary header fields for streaming and downloading requests can be set here.
+     */
+    public var HTTPHeaderFields: [String: String]? {
+        didSet {
+            audioDataManager.setHTTPHeaderFields(HTTPHeaderFields)
+        }
+    }
+
+    public var allowUsingCellularData: Bool = true {
+        didSet {
+            downloader.allowUsingCellularData = allowUsingCellularData
+        }
+    }
+
+    /**
+     Unique ID for the current engine. This will be nil if no audio has been initialized which means no engine exists.
+     */
+    public var engineUID: String? {
+        return player?.key
+    }
+
+    /**
+     Access the player node of the engine. Node is nil if player has not been initialized with audio.
+
+      - Important: Changes to the engine and this node are not safe guarded, thus unknown behaviour can arise from changing the engine or this node. Just be wary and read [documentation of AVAudioEngine](https://developer.apple.com/documentation/avfoundation/avaudioengine) well when modifying,
+     */
+    public var playerNode: AVAudioPlayerNode? {
+        return player?.playerNode
+    }
+
+    /**
+     Corresponding to the overall volume of the player. Volume's default value is 1.0 and the range of valid values is 0.0 to 1.0. Volume is nil if no audio has been initialized yet.
+     */
+    public var volume: Float? {
+        get {
+            return player?.playerNode.volume
+        }
+
+        set {
+            guard let value = newValue else { return }
+            guard value >= 0.0, value <= 1.0 else { return }
+
+            player?.playerNode.volume = value
+        }
+    }
+
+    /**
+     Corresponding to the rate of audio playback. This rate assumes use of the default rate modifier at the first index of `audioModifiers`; if you removed that modifier than this will be nil. If no audio has been initialized then this will also be nil.
+
+      - Note: By default this engine has added a pitch modifier node to change the pitch so that on playback rate changes of spoken word the pitch isn't shifted.
+
+      The component description of this node is:
+      ````
+      var componentDescription: AudioComponentDescription {
+         get {
+             var ret = AudioComponentDescription()
+             ret.componentType = kAudioUnitType_FormatConverter
+             ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+             return ret
+         }
+      }
+      ````
+      Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+
+      For more details on pitch modifiers for playback rate changes please look at [developer.apple.com/forums/thread/6050](https://developer.apple.com/forums/thread/6050).
+     */
+    public var rate: Float? {
+        get {
+            return (audioModifiers.first as? AVAudioUnitTimePitch)?.rate
+        }
+
+        set {
+            guard let value = newValue else { return }
+            guard let node = audioModifiers.first as? AVAudioUnitTimePitch else { return }
+
+            node.rate = value
+            playbackRateOfAudioChanged(rate: value)
+        }
+    }
+
+    /**
+     Corresponding to the skipping forward button on the media player on the lockscreen. Default is set to 30 seconds.
+     */
+    public var skipForwardSeconds: Double = 30 {
+        didSet {
+            presenter.handleScrubbingIntervalsChanged()
+        }
+    }
+
+    /**
+     Corresponding to the skipping backwards button on the media player on the lockscreen. Default is set to 15 seconds.
+     */
+    public var skipBackwardSeconds: Double = 15 {
+        didSet {
+            presenter.handleScrubbingIntervalsChanged()
+        }
+    }
+
+    /**
+     List of [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) audio modifiers to pass to the engine on initialization.
+
+     - Important: To have the intended effects, the list of modifiers must be finalized before initializing the audio to be played. The modifers are added to the engine in order of the list.
+
+     - Note: The default list already has an AVAudioUnitTimePitch node first in the list. This node is specifically set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+
+         The component description of this node is:
+         ````
+         var componentDescription: AudioComponentDescription {
+            get {
+                var ret = AudioComponentDescription()
+                ret.componentType = kAudioUnitType_FormatConverter
+                ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+                return ret
+            }
+         }
+         ````
+         Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+
+     For more details on pitch modifiers for playback rate changes please look at [developer.apple.com/forums/thread/6050](https://developer.apple.com/forums/thread/6050).
+
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
+     */
+    public var audioModifiers: [AVAudioUnit] = []
+
+    /**
+     List of queued audio for playback. You can edit this list as you wish to modify the queue.
+     */
+    public var audioQueued: [SAAudioQueueItem] {
+        get {
+            return presenter.audioQueue
+        }
+        set {
+            presenter.audioQueue = newValue
+        }
+    }
+
+    /**
+     Total duration of current audio initialized. Returns nil if no audio is initialized in player.
+
+     - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, this value will be constantly updating to best known value at the time.
+     */
+    public var duration: Double? {
+        return presenter.duration
+    }
+
+    /**
+     A textual representation of the duration of the current audio initialized. Returns nil if no audio is initialized in player.
+     */
+    public var prettyDuration: String? {
+        guard let d = duration else { return nil }
+        return SAPlayer.prettifyTimestamp(d)
+    }
+
+    /**
+     Elapsed playback time of the current audio initialized. Returns nil if no audio is initialized in player.
+     */
+    public var elapsedTime: Double? {
+        return presenter.needle
+    }
+
+    /**
+     A textual representation of the elapsed playback time of the current audio initialized. Returns nil if no audio is initialized in player.
+     */
+    public var prettyElapsedTime: String? {
+        guard let e = elapsedTime else { return nil }
+        return SAPlayer.prettifyTimestamp(e)
+    }
+
+    /**
+     Corresponding to the media info to display on the lockscreen for the current audio.
+
+     - Note: Setting this to nil clears the information displayed on the lockscreen media player.
+     */
+    public var mediaInfo: SALockScreenInfo?
+
+    public init(engine: AVAudioEngine) {
+        self.engine = engine
+        presenter = SAPlayerPresenter(delegate: self, audioClockDirector: audioClockDirector, audioQueueDirector: audioQueueDirector)
+
+        // https://forums.developer.apple.com/thread/5874
+        // https://forums.developer.apple.com/thread/6050
+        // AVAudioTimePitchAlgorithm.timeDomain (just in case we want it)
+        var componentDescription: AudioComponentDescription {
+            var ret = AudioComponentDescription()
+            ret.componentType = kAudioUnitType_FormatConverter
+            ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+            return ret
+        }
+
+        audioModifiers.append(AVAudioUnitTimePitch(audioComponentDescription: componentDescription))
+        NotificationCenter.default.addObserver(self, selector: #selector(handleInterruption), name: AVAudioSession.interruptionNotification, object: nil)
+    }
+
+    /**
+     Clears all [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) modifiers intended to be used for realtime audio manipulation.
+     */
+    public func clearAudioModifiers() {
+        audioModifiers.removeAll()
+    }
+
+    /**
+     Append an [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) modifier to the list of modifiers used for realtime audio manipulation. The modifier will be added to the end of the list.
+
+     - Parameter modifier: The modifier to append.
+     */
+    public func addAudioModifier(_ modifer: AVAudioUnit) {
+        audioModifiers.append(modifer)
+    }
+
+    /**
+     Formats a textual representation of a given timestamp for display in hh:MM:SS format, that is hours:minutes:seconds.
+
+     - Parameter timestamp: The timestamp to format.
+     - Returns: A textual representation of the given timestamp
+     */
+    public static func prettifyTimestamp(_ timestamp: Double) -> String {
+        let hours = Int(timestamp / 60 / 60)
+        let minutes = Int((timestamp - Double(hours * 60 * 60)) / 60)
+        let secondsLeft = Int(timestamp - Double(hours * 60 * 60) - Double(minutes * 60))
+
+        return "\(hours):\(String(format: "%02d", minutes)):\(String(format: "%02d", secondsLeft))"
+    }
+
+    func getUrl(forKey key: Key) -> URL? {
+        return presenter.getUrl(forKey: key)
+    }
+
+    func addUrlToMapping(url: URL) {
+        presenter.addUrlToKeyMap(url)
+    }
+
+    @objc func handleInterruption(notification: Notification) {
+        guard let userInfo = notification.userInfo,
+              let typeValue = userInfo[AVAudioSessionInterruptionTypeKey] as? UInt,
+              let type = AVAudioSession.InterruptionType(rawValue: typeValue)
+        else {
+            return
+        }
+
+        // Switch over the interruption type.
+        switch type {
+        case .began:
+            // An interruption began. Update the UI as necessary.
+            pause()
+
+        case .ended:
+            // An interruption ended. Resume playback, if appropriate.
+
+            guard let optionsValue = userInfo[AVAudioSessionInterruptionOptionKey] as? UInt else { return }
+            let options = AVAudioSession.InterruptionOptions(rawValue: optionsValue)
+            if options.contains(.shouldResume) {
+                // An interruption ended. Resume playback.
+                play()
+            } else {
+                // An interruption ended. Don't resume playback.
+            }
+
+        default: ()
+        }
+    }
+}
+
+public enum SAPlayerBitrate {
+    /// This bitrate is good for radio streams that are passing ittle amounts of audio data at a time. This will allow the player to process the audio data in a fast enough rate to not pause or get stuck playing. This rate however ends up using more CPU and is worse for your battery-life and performance of your app.
+    case low
+
+    /// This bitrate is good for streaming saved audio files like podcasts where most of the audio data will be received from the remote server at the beginning in a short time. This rate is more performant by using much less CPU and being better for your battery-life and app performance.
+    case high // go for audio files being streamed. This is uses less CPU and
+}
+
+// MARK: - External Player Controls
+
+public extension SAPlayer {
+    /**
+     Toggles between the play and pause state of the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+
+     - Note: If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
+     */
+    func togglePlayAndPause() {
+        presenter.handleTogglePlayingAndPausing()
+    }
+
+    /**
+     Attempts to play the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+
+     - Note: If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
+     */
+    func play() {
+        presenter.handlePlay()
+    }
+
+    /**
+     Attempts to pause the player. If nothing is playable (aka still in buffering state or no audio is initialized) no action will be taken. Please call `startSavedAudio` or `startRemoteAudio` to set up the player with audio before this.
+
+     - Note:If you are streaming, wait till the status from `SAPlayer.Updates.PlayingStatus` is not `.buffering`.
+     */
+    func pause() {
+        presenter.handlePause()
+    }
+
+    /**
+     Attempts to skip forward in audio even if nothing playable is loaded (aka still in buffering state or no audio is initialized). The interval to which to skip forward is defined by `SAPlayer.shared.skipForwardSeconds`.
+
+     - Note: The skipping is limited to the duration of the audio, if the intended skip is past the duration of the current audio, the skip will just go to the end.
+     */
+    func skipForward() {
+        presenter.handleSkipForward()
+    }
+
+    /**
+     Attempts to skip backwards in audio even if nothing playable is loaded (aka still in buffering state or no audio is initialized). The interval to which to skip backwards is defined by `SAPlayer.shared.skipBackwardSeconds`.
+
+     - Note: The skipping is limited to the playable timestamps, if the intended skip is below 0 seconds, the skip will just go to 0 seconds.
+     */
+    func skipBackwards() {
+        presenter.handleSkipBackward()
+    }
+
+    /**
+     Attempts to seek/scrub through the audio even if nothing playable is loaded (aka still in buffering state or no audio is initialized).
+
+     - Parameter seconds: The intended seconds within the audio to seek to.
+
+     - Note: The seeking is limited to the playable timestamps, if the intended seek is below 0 seconds, the skip will just go to 0 seconds. If the intended seek is past the curation of the current audio, the seek will just go to the end.
+     */
+    func seekTo(seconds: Double) {
+        presenter.handleSeek(toNeedle: seconds)
+    }
+
+    /**
+     If using an AVAudioUnitTimePitch, it's important to notify the player that the rate at which the audio playing has changed to keep the media player in the lockscreen up to date. This is only important for playback rate changes.
+
+     - Note: By default this engine has added a pitch modifier node to change the pitch so that on playback rate changes of spoken word the pitch isn't shifted.
+
+     The component description of this node is:
+     ````
+     var componentDescription: AudioComponentDescription {
+        get {
+            var ret = AudioComponentDescription()
+            ret.componentType = kAudioUnitType_FormatConverter
+            ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+            return ret
+        }
+     }
+     ````
+     Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+
+     For more details on pitch modifiers for playback rate changes please look at [developer.apple.com/forums/thread/6050](https://developer.apple.com/forums/thread/6050).
+
+     - Parameter rate: The current rate at which the audio is playing.
+     */
+    func playbackRateOfAudioChanged(rate: Float) {
+        presenter.handleAudioRateChanged(rate: rate)
+    }
+
+    /**
+     Sets up player to play audio that has been saved on the device.
+
+     - Important: If intending to use [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) audio modifiers during playback, the list of audio modifiers under `SAPlayer.shared.audioModifiers` must be finalized before calling this function. After all realtime audio manipulations within the this will be effective.
+
+     - Note: The default list already has an AVAudioUnitTimePitch node first in the list. This node is specifically set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+
+         The component description of this node is:
+         ````
+         var componentDescription: AudioComponentDescription {
+            get {
+                var ret = AudioComponentDescription()
+                ret.componentType = kAudioUnitType_FormatConverter
+                ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+                return ret
+            }
+         }
+         ````
+         Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
+
+     - Parameter withSavedUrl: The URL of the audio saved on the device.
+     - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
+     */
+    func startSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
+        // Because we support queueing, we want to clear off any existing players.
+        // Therefore, instantiate new player every time, destroy any existing ones.
+        // This prevents a crash where an owning engine already exists.
+        presenter.handleClear()
+
+        // order here matters, need to set media info before trying to play audio
+        self.mediaInfo = mediaInfo
+        presenter.handlePlaySavedAudio(withSavedUrl: url)
+    }
+
+    /**
+     Sets up player to play audio that will be streamed from a remote location. After this is called, it will connect to the server and start to receive and process data. The player is not playable the SAAudioAvailabilityRange notifies that player is ready for playing (you can subscribe to these updates through `SAPlayer.Updates.StreamingBuffer`). You can alternatively see when the player is available to play by subscribing to `SAPlayer.Updates.PlayingStatus` and waiting for a status that isn't `.buffering`.
+
+     - Important: If intending to use [AVAudioUnit](https://developer.apple.com/documentation/avfoundation/audio_track_engineering/audio_engine_building_blocks/audio_enhancements) audio modifiers during playback, the list of audio modifiers under `SAPlayer.shared.audioModifiers` must be finalized before calling this function. After all realtime audio manipulations within the this will be effective.
+
+     - Note: The default list already has an AVAudioUnitTimePitch node first in the list. This node is specifically set to change the rate of audio without changing the pitch of the audio (intended for changing the rate of spoken word).
+
+         The component description of this node is:
+         ````
+         var componentDescription: AudioComponentDescription {
+            get {
+                var ret = AudioComponentDescription()
+                ret.componentType = kAudioUnitType_FormatConverter
+                ret.componentSubType = kAudioUnitSubType_AUiPodTimeOther
+                return ret
+            }
+         }
+         ````
+         Please look at [forums.developer.apple.com/thread/5874](https://forums.developer.apple.com/thread/5874) and [forums.developer.apple.com/thread/6050](https://forums.developer.apple.com/thread/6050) for more details.
+
+     To remove this default pitch modifier for playback rate changes, remove the node by calling `SAPlayer.shared.clearAudioModifiers()`.
+
+     - Note: Subscribe to `SAPlayer.Updates.StreamingBuffer` to see updates in streaming progress.
+
+     - Parameter withRemoteUrl: The URL of the remote audio.
+     - Parameter bitrate: The bitrate of the streamed audio. By default the bitrate is set to high for streaming saved audio files. If you want to stream radios then you should use the `low` bitrate option.
+     - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
+     */
+    func startRemoteAudio(withRemoteUrl url: URL, bitrate: SAPlayerBitrate = .high, mediaInfo: SALockScreenInfo? = nil) {
+        // Because we support queueing, we want to clear off any existing players.
+        // Therefore, instantiate new player every time, destroy any existing ones.
+        // This prevents a crash where an owning engine already exists.
+        presenter.handleClear()
+
+        // order here matters, need to set media info before trying to play audio
+        self.mediaInfo = mediaInfo
+        presenter.handlePlayStreamedAudio(withRemoteUrl: url, bitrate: bitrate)
+    }
+
+    /**
+     Stops any streaming in progress.
+     */
+    func stopStreamingRemoteAudio() {
+        presenter.handleStopStreamingAudio()
+    }
+
+    /**
+     Queues remote audio to be played next. The URLs in the queue can be both remote or on disk but once the queued audio starts playing it will start buffering and loading then. This means no guarantee for a 'gapless' playback where there might be several moments in between one audio ending and another starting due to buffering remote audio.
+
+     - Parameter withRemoteUrl: The URL of the remote audio.
+     - Parameter bitrate: The bitrate of the streamed audio. By default the bitrate is set to high for streaming saved audio files. If you want to stream radios then you should use the `low` bitrate option.
+     - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
+     */
+    func queueRemoteAudio(withRemoteUrl url: URL, bitrate: SAPlayerBitrate = .high, mediaInfo: SALockScreenInfo? = nil) {
+        presenter.handleQueueStreamedAudio(withRemoteUrl: url, mediaInfo: mediaInfo, bitrate: bitrate)
+    }
+
+    /**
+     Queues saved audio to be played next. The URLs in the queue can be both remote or on disk but once the queued audio starts playing it will start buffering and loading then. This means no guarantee for a 'gapless' playback where there might be several moments in between one audio ending and another starting due to buffering remote audio.
+
+     - Parameter withSavedUrl: The URL of the audio saved on the device.
+     - Parameter mediaInfo: The media information of the audio to show on the lockscreen media player (optional).
+     */
+    func queueSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo? = nil) {
+        presenter.handleQueueSavedAudio(withSavedUrl: url, mediaInfo: mediaInfo)
+    }
+
+    /**
+     Remove the first queued audio if one exists. Receive the first URL removed back.
+
+     - Returns the URL of the removed audio.
+     */
+    func removeFirstQueuedAudio() -> URL? {
+        guard audioQueued.count != 0 else { return nil }
+        return presenter.handleRemoveFirstQueuedItem()
+    }
+
+    /**
+     Clear the list of queued audio.
+
+     - Returns the list of removed audio URLs
+     */
+    func clearAllQueuedAudio() -> [URL] {
+        return presenter.handleClearQueued()
+    }
+
+    /**
+     Resets the player to the state before initializing audio and setting media info.
+     */
+    func clear() {
+        presenter.handleClear()
+    }
+}
+
+// MARK: - Internal implementation of delegate
+
+extension SAPlayer: SAPlayerDelegate {
+    internal func startAudioDownloaded(withSavedUrl url: AudioURL) {
+        player = AudioDiskEngine(withSavedUrl: url, delegate: presenter, engine: engine, audioClockDirector: audioClockDirector)
+    }
+
+    internal func startAudioStreamed(withRemoteUrl url: AudioURL, bitrate: SAPlayerBitrate) {
+        player = AudioStreamEngine(
+            withRemoteUrl: url,
+            delegate: presenter,
+            bitrate: bitrate,
+            engine: engine,
+            withAudioClockDirector: audioClockDirector,
+            withStreamingDownloadDirector: streamingDownloadDirector,
+            withAudioDataManager: audioDataManager
+        )
+    }
+
+    internal func clearEngine() {
+        player?.pause()
+        player?.invalidate()
+        player = nil
+        Log.info("cleared engine")
+    }
+
+    internal func playEngine() {
+        becomeDeviceAudioPlayer()
+        player?.play()
+    }
+
+    // Start taking control as the device's player
+    private func becomeDeviceAudioPlayer() {
+        do {
+            if #available(iOS 11.0, tvOS 11.0, *) {
+                try AVAudioSession.sharedInstance().setCategory(.playback, mode: .spokenAudio, policy: .longFormAudio, options: [])
+            } else {
+                try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback, mode: AVAudioSession.Mode(rawValue: convertFromAVAudioSessionMode(AVAudioSession.Mode.default)), options: .allowAirPlay)
+            }
+            try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation)
+        } catch {
+            Log.monitor("Problem setting up AVAudioSession to play in:: \(error.localizedDescription)")
+        }
+    }
+
+    internal func pauseEngine() {
+        player?.pause()
+    }
+
+    internal func seekEngine(toNeedle needle: Needle) {
+        let seekToNeedle = needle < 0 ? 0 : needle
+        player?.seek(toNeedle: seekToNeedle)
+    }
+}
+
+// Helper function inserted by Swift 4.2 migrator.
+private func convertFromAVAudioSessionMode(_ input: AVAudioSession.Mode) -> String {
+    return input.rawValue
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerDelegate.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerDelegate.swift
new file mode 100644
index 000000000..4ba7bea23
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerDelegate.swift
@@ -0,0 +1,42 @@
+//
+//  SAPlayerDelegate.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFAudio
+import CoreMedia
+import Foundation
+
+protocol SAPlayerDelegate: AnyObject, LockScreenViewProtocol {
+    var mediaInfo: SALockScreenInfo? { get set }
+    var skipForwardSeconds: Double { get set }
+    var skipBackwardSeconds: Double { get set }
+    var audioModifiers: [AVAudioUnit] { get }
+
+    func startAudioDownloaded(withSavedUrl url: AudioURL)
+    func startAudioStreamed(withRemoteUrl url: AudioURL, bitrate: SAPlayerBitrate)
+    func clearEngine()
+    func playEngine()
+    func pauseEngine()
+    func seekEngine(toNeedle needle: Needle) // TODO: ensure that engine cleans up out of bounds
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerDownloader.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerDownloader.swift
new file mode 100644
index 000000000..becde4613
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerDownloader.swift
@@ -0,0 +1,128 @@
+//
+//  SAPlayerDownloader.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-02-25.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+public extension SAPlayer {
+    /**
+     Actions relating to downloading remote audio to the device for offline playback.
+
+     - Note: All saved urls generated from downloaded audio corresponds to a specific remote url. Thus, can be queryed if original remote url is known.
+
+     - Important: Please ensure that you have passed in the background download completion handler in the AppDelegate with `setBackgroundCompletionHandler` to allow for downloading audio while app is in the background.
+     */
+    struct Downloader {
+        private let player: SAPlayer
+
+        public init(player: SAPlayer) {
+            self.player = player
+        }
+
+        /**
+         Download audio from a remote url. Will save the audio on the device for playback later.
+
+         Save the saved url of the downloaded audio for future playback or query for the saved url with the same remote url in the future.
+
+         - Note: It's recommended to have a weak reference to a class that uses this function
+
+         - Note: Subscribe to `SAPlayer.Updates.AudioDownloading` to see updates in downloading progress.
+
+         - Parameter url: The remote url to download audio from.
+         - Parameter completion: Completion handler that will return once the download is successful and complete.
+         - Parameter savedUrl: The url of where the audio was saved locally on the device. Will receive once download has completed.
+         */
+        public func downloadAudio(withRemoteUrl url: URL, completion: @escaping (_ savedUrl: URL, _ error: Error?) -> Void) {
+            player.addUrlToMapping(url: url)
+            player.audioDataManager.startDownload(withRemoteURL: url, completion: completion)
+        }
+
+        /**
+         Cancel downloading audio from a specific remote url if actively downloading. If download has not started yet, it will remove from the list of future downloads queued.
+
+         - Parameter url: The remote url corresponding to the active download you want to cancel.
+         */
+        public func cancelDownload(withRemoteUrl url: URL) {
+            player.audioDataManager.cancelDownload(withRemoteURL: url)
+        }
+
+        /**
+         Delete downloaded audio file from device at url.
+
+         - Note: This will delete any file saved on device at the local url. This, however, is intended to use for audio files.
+
+         - Parameter url: The url of the audio to delete from the device.
+         */
+        public func deleteDownloaded(withSavedUrl url: URL) {
+            player.audioDataManager.deleteDownload(withLocalURL: url)
+        }
+
+        /**
+         Check if audio at remote url is downloaded on device.
+
+         - Parameter url: The remote url corresponding to the audio file you want to see if downloaded.
+         - Returns: Whether of not file at remote url is downloaded on device.
+         */
+        public func isDownloaded(withRemoteUrl url: URL) -> Bool {
+            return player.audioDataManager.getPersistedUrl(withRemoteURL: url) != nil
+        }
+
+        /**
+         Get url of audio file downloaded from remote url onto on device if it exists.
+
+         - Parameter url: The remote url corresponding to the audio file you want the device url of.
+         - Returns: Url of audio file on device if it exists.
+         */
+        public func getSavedUrl(forRemoteUrl url: URL) -> URL? {
+            return player.audioDataManager.getPersistedUrl(withRemoteURL: url)
+        }
+
+        /**
+         Pass along the completion handler from `AppDelegate` to ensure downloading continues while app is in background.
+
+         - Parameter completionHandler: The completion hander from `AppDelegate` to use for app in the background downloads.
+         */
+        public func setBackgroundCompletionHandler(_ completionHandler: @escaping () -> Void) {
+            player.audioDataManager.setBackgroundCompletionHandler(completionHandler)
+        }
+
+        /**
+         Whether downloading audio on cellular data is allowed. By default this is set to `true`.
+         */
+        public var allowUsingCellularData = true {
+            didSet {
+                player.audioDataManager.setAllowCellularDownloadPreference(allowUsingCellularData)
+            }
+        }
+
+        /**
+         EXPERIMENTAL!
+         */
+        public var downloadDirectory: FileManager.SearchPathDirectory = .documentDirectory {
+            didSet {
+                player.audioDataManager.setDownloadDirectory(downloadDirectory)
+            }
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerFeatures.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerFeatures.swift
new file mode 100644
index 000000000..85d4ce1c0
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerFeatures.swift
@@ -0,0 +1,163 @@
+//
+//  SAPlayerFeature.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 3/10/21.
+//
+
+import AVFoundation
+import Foundation
+
+public extension SAPlayer {
+    /**
+     Special features for audio manipulation. These are examples of manipulations you can do with the player outside of this library. This is just an aggregation of community contibuted ones.
+
+     - Note: These features assume default state of the player and `audioModifiers` meaning some expect the first audio modifier to be the default `AVAudioUnitTimePitch` that comes with the SAPlayer.
+     */
+    struct Features {
+        /**
+         Feature to skip silences in spoken word audio. The player will speed up the rate of audio playback when silence is detected.
+
+         - Important: The first audio modifier must be the default `AVAudioUnitTimePitch` that comes with the SAPlayer for this feature to work.
+         */
+        public struct SkipSilences {
+            static var enabled: Bool = false
+            static var originalRate: Float = 1.0
+
+            /**
+             Enable feature to skip silences in spoken word audio. The player will speed up the rate of audio playback when silence is detected. This can be called at any point of audio playback.
+
+             - Precondition: The first audio modifier must be the default `AVAudioUnitTimePitch` that comes with the SAPlayer for this feature to work.
+             - Important: If you want to change the rate of the overall player while having skip silences on, please use `SAPlayer.Features.SkipSilences.setRateSafely()` to properly set the rate of the player. Any rate changes to the player will be ignored while using Skip Silences otherwise.
+             */
+            public static func enable(on player: SAPlayer) -> Bool {
+                guard let engine = player.engine else { return false }
+
+                Log.info("enabling skip silences feature")
+                enabled = true
+                originalRate = player.rate ?? 1.0
+                let format = engine.mainMixerNode.outputFormat(forBus: 0)
+
+                // look at documentation here to get an understanding of what is happening here: https://www.raywenderlich.com/5154-avaudioengine-tutorial-for-ios-getting-started#toc-anchor-005
+                engine.mainMixerNode.installTap(onBus: 0, bufferSize: 1024, format: format) { buffer, _ in
+                    guard let channelData = buffer.floatChannelData else {
+                        return
+                    }
+
+                    let channelDataValue = channelData.pointee
+                    let channelDataValueArray = stride(from: 0,
+                                                       to: Int(buffer.frameLength),
+                                                       by: buffer.stride).map { channelDataValue[$0] }
+
+                    let rms = sqrt(channelDataValueArray.map { $0 * $0 }.reduce(0, +) / Float(buffer.frameLength))
+
+                    let avgPower = 20 * log10(rms)
+
+                    let meterLevel = self.scaledPower(power: avgPower)
+                    Log.debug("meterLevel: \(meterLevel)")
+                    if meterLevel < 0.6 { // below 0.6 decibels is below audible audio
+                        player.rate = originalRate + 0.5
+                        Log.debug("speed up rate to \(String(describing: player.rate))")
+                    } else {
+                        player.rate = originalRate
+                        Log.debug("slow down rate to \(String(describing: player.rate))")
+                    }
+                }
+
+                return true
+            }
+
+            /**
+             Disable feature to skip silences in spoken word audio. The player will speed up the rate of audio playback when silence is detected. This can be called at any point of audio playback.
+
+             - Precondition: The first audio modifier must be the default `AVAudioUnitTimePitch` that comes with the SAPlayer for this feature to work.
+             */
+            public static func disable(on player: SAPlayer) -> Bool {
+                guard let engine = player.engine else { return false }
+                Log.info("disabling skip silences feature")
+                engine.mainMixerNode.removeTap(onBus: 0)
+                player.rate = originalRate
+                enabled = false
+                return true
+            }
+
+            /**
+             Use this function to set the overall rate of the player for when skip silences is on. This ensures that the overall rate will be what is set through this function even as skip silences is on; if this function is not used then any changes asked of from the overall player while skip silences is on won't be recorded!
+
+             - Important: The first audio modifier must be the default `AVAudioUnitTimePitch` that comes with the SAPlayer for this feature to work.
+             */
+            public static func setRateSafely(_ rate: Float, on player: SAPlayer) {
+                originalRate = rate
+                player.rate = rate
+            }
+
+            private static func scaledPower(power: Float) -> Float {
+                guard power.isFinite else { return 0.0 }
+                let minDb: Float = -80.0
+                if power < minDb {
+                    return 0.0
+                } else if power >= 1.0 {
+                    return 1.0
+                } else {
+                    return (abs(minDb) - abs(power)) / abs(minDb)
+                }
+            }
+        }
+
+        /**
+         Feature to pause the player after a delay. This will happen regardless of if another audio clip has started.
+         */
+        public enum SleepTimer {
+            static var timer: Timer?
+
+            /**
+             Enable feature to pause the player after a delay. This will happen regardless of if another audio clip has started.
+
+             - Parameter afterDelay: The number of seconds to wait before pausing the audio
+             */
+            public static func enable(afterDelay delay: Double, on player: SAPlayer) {
+                timer = Timer.scheduledTimer(withTimeInterval: delay, repeats: false, block: { _ in
+                    player.pause()
+                })
+            }
+
+            /**
+             Disable feature to pause the player after a delay.
+             */
+            public static func disable() {
+                timer?.invalidate()
+            }
+        }
+
+        /**
+         Feature to play the current playing audio on repeat until feature is disabled.
+         */
+        public enum Loop {
+            static var enabled: Bool = false
+            static var playingStatusId: UInt?
+
+            /**
+             Enable feature to play the current playing audio on loop. This will continue until the feature is disabled. And this feature works for both remote and saved audio.
+             */
+            public static func enable(on player: SAPlayer) {
+                enabled = true
+
+                guard playingStatusId == nil else { return }
+
+                playingStatusId = SAPlayer.Updates.PlayingStatus(audioClockDirector: player.audioClockDirector).subscribe { status in
+                    if status == .ended, enabled {
+                        player.seekTo(seconds: 0.0)
+                        player.play()
+                    }
+                }
+            }
+
+            /**
+             Disable feature playing audio on loop.
+             */
+            public static func disable() {
+                enabled = false
+            }
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerHelpers.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerHelpers.swift
new file mode 100644
index 000000000..baed03b5f
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerHelpers.swift
@@ -0,0 +1,84 @@
+//
+//  SALockScreenInfo.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-02-18.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+import UIKit
+
+/**
+ UTC corresponds to epoch time (number of seconds that have elapsed since January 1, 1970, midnight UTC/GMT). https://www.epochconverter.com/ is a useful site to convert to human readable format.
+ */
+public typealias UTC = Int
+
+/**
+ Use to set what will be displayed in the lockscreen.
+ */
+public struct SALockScreenInfo {
+    var title: String
+    var artist: String
+    var albumTitle: String?
+    var artwork: UIImage?
+    var releaseDate: UTC
+
+    public init(title: String, artist: String, albumTitle: String?, artwork: UIImage?, releaseDate: UTC) {
+        self.title = title
+        self.artist = artist
+        self.albumTitle = albumTitle
+        self.artwork = artwork
+        self.releaseDate = releaseDate
+    }
+}
+
+/**
+ Use to add audio to be queued for playback.
+ */
+public struct SAAudioQueueItem {
+    public var loc: Location
+    public var url: URL
+    public var mediaInfo: SALockScreenInfo?
+    public var bitrate: SAPlayerBitrate
+
+    /**
+     Use to add audio to be queued for playback.
+
+     - Parameter loc: If the URL for the file is remote or saved on device.
+     - Parameter url: URL of audio to be queued
+     - Parameter mediaInfo: Relevant lockscreen media info for the queued audio.
+     - Parameter bitrate: For streamed remote audio specifiy a bitrate if different from high. Use low bitrate for radio streams.
+     */
+    public init(loc: Location, url: URL, mediaInfo: SALockScreenInfo?, bitrate: SAPlayerBitrate = .high) {
+        self.loc = loc
+        self.url = url
+        self.mediaInfo = mediaInfo
+        self.bitrate = bitrate
+    }
+
+    /**
+     Where the queued audio is sourced. Remote to be streamed or locally saved on device.
+     */
+    public enum Location {
+        case remote
+        case saved
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerPresenter.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerPresenter.swift
new file mode 100644
index 000000000..2832a50e8
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerPresenter.swift
@@ -0,0 +1,253 @@
+//
+//  SAPlayerPresenter.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import AVFoundation
+import Foundation
+import MediaPlayer
+
+class SAPlayerPresenter {
+    weak var delegate: SAPlayerDelegate?
+    var shouldPlayImmediately = false // for auto-play
+
+    var needle: Needle?
+    var duration: Duration?
+
+    private var key: String?
+    private var isPlaying: SAPlayingStatus = .buffering
+
+    private var urlKeyMap: [Key: URL] = [:]
+
+    var durationRef: UInt = 0
+    var needleRef: UInt = 0
+    var playingStatusRef: UInt = 0
+    var audioQueue: [SAAudioQueueItem] = []
+
+    var audioClockDirector: AudioClockDirector
+    var audioQueueDirector: AudioQueueDirector
+
+    init(delegate: SAPlayerDelegate?, audioClockDirector: AudioClockDirector, audioQueueDirector: AudioQueueDirector) {
+        self.delegate = delegate
+        self.audioClockDirector = audioClockDirector
+        self.audioQueueDirector = audioQueueDirector
+
+        durationRef = audioClockDirector.attachToChangesInDuration(closure: { [weak self] duration in
+            guard let self = self else { throw DirectorError.closureIsDead }
+
+            self.delegate?.updateLockScreenPlaybackDuration(duration: duration)
+            self.duration = duration
+
+            self.delegate?.setLockScreenInfo(withMediaInfo: self.delegate?.mediaInfo, duration: duration)
+        })
+
+        needleRef = audioClockDirector.attachToChangesInNeedle(closure: { [weak self] needle in
+            guard let self = self else { throw DirectorError.closureIsDead }
+
+            self.needle = needle
+            self.delegate?.updateLockScreenElapsedTime(needle: needle)
+        })
+
+        playingStatusRef = audioClockDirector.attachToChangesInPlayingStatus(closure: { [weak self] isPlaying in
+            guard let self = self else { throw DirectorError.closureIsDead }
+
+            if isPlaying == .paused, self.shouldPlayImmediately {
+                self.shouldPlayImmediately = false
+                self.handlePlay()
+            }
+
+            // solves bug nil == owningEngine || GetEngine() == owningEngine where too many
+            // ended statuses were notified to cause 2 engines to be initialized and causes an error.
+            // TODO: don't need guard
+            guard isPlaying != self.isPlaying else { return }
+            self.isPlaying = isPlaying
+
+            if self.isPlaying == .ended {
+                self.playNextAudioIfExists()
+            }
+        })
+    }
+
+    func getUrl(forKey key: Key) -> URL? {
+        return urlKeyMap[key]
+    }
+
+    func addUrlToKeyMap(_ url: URL) {
+        urlKeyMap[url.key] = url
+    }
+
+    func handleClear() {
+        delegate?.clearEngine()
+        audioClockDirector.resetCache()
+
+        needle = nil
+        duration = nil
+        key = nil
+        delegate?.mediaInfo = nil
+        delegate?.clearLockScreenInfo()
+    }
+
+    func handlePlaySavedAudio(withSavedUrl url: URL) {
+        resetCacheForNewAudio(url: url)
+        delegate?.setLockScreenControls(presenter: self)
+        delegate?.startAudioDownloaded(withSavedUrl: url)
+    }
+
+    func handlePlayStreamedAudio(withRemoteUrl url: URL, bitrate: SAPlayerBitrate) {
+        resetCacheForNewAudio(url: url)
+        delegate?.setLockScreenControls(presenter: self)
+        delegate?.startAudioStreamed(withRemoteUrl: url, bitrate: bitrate)
+    }
+
+    private func resetCacheForNewAudio(url: URL) {
+        key = url.key
+        urlKeyMap[url.key] = url
+
+        audioClockDirector.setKey(url.key)
+        audioClockDirector.resetCache()
+    }
+
+    func handleQueueStreamedAudio(withRemoteUrl url: URL, mediaInfo: SALockScreenInfo?, bitrate: SAPlayerBitrate) {
+        audioQueue.append(SAAudioQueueItem(loc: .remote, url: url, mediaInfo: mediaInfo, bitrate: bitrate))
+    }
+
+    func handleQueueSavedAudio(withSavedUrl url: URL, mediaInfo: SALockScreenInfo?) {
+        audioQueue.append(SAAudioQueueItem(loc: .saved, url: url, mediaInfo: mediaInfo))
+    }
+
+    func handleRemoveFirstQueuedItem() -> URL? {
+        guard audioQueue.count != 0 else { return nil }
+
+        return audioQueue.remove(at: 0).url
+    }
+
+    func handleClearQueued() -> [URL] {
+        guard audioQueue.count != 0 else { return [] }
+
+        let urls = audioQueue.map { item in
+            item.url
+        }
+
+        audioQueue = []
+        return urls
+    }
+
+    func handleStopStreamingAudio() {
+        delegate?.clearEngine()
+        audioClockDirector.resetCache()
+    }
+}
+
+// MARK: - Used by outside world including:
+
+// SPP, lock screen, directors
+extension SAPlayerPresenter {
+    func handleTogglePlayingAndPausing() {
+        if isPlaying == .playing {
+            handlePause()
+        } else if isPlaying == .paused {
+            handlePlay()
+        }
+    }
+
+    func handleAudioRateChanged(rate: Float) {
+        delegate?.updateLockScreenChangePlaybackRate(speed: rate)
+    }
+
+    func handleScrubbingIntervalsChanged() {
+        delegate?.updateLockScreenSkipIntervals()
+    }
+}
+
+// MARK: - For lock screen
+
+extension SAPlayerPresenter: LockScreenViewPresenter {
+    func getIsPlaying() -> Bool {
+        return isPlaying == .playing
+    }
+
+    func handlePlay() {
+        delegate?.playEngine()
+        delegate?.updateLockScreenPlaying()
+    }
+
+    func handlePause() {
+        delegate?.pauseEngine()
+        delegate?.updateLockScreenPaused()
+    }
+
+    func handleSkipBackward() {
+        guard let backward = delegate?.skipBackwardSeconds else { return }
+        handleSeek(toNeedle: (needle ?? 0) - backward)
+    }
+
+    func handleSkipForward() {
+        guard let forward = delegate?.skipForwardSeconds else { return }
+        handleSeek(toNeedle: (needle ?? 0) + forward)
+    }
+
+    func handleSeek(toNeedle needle: Needle) {
+        delegate?.seekEngine(toNeedle: needle)
+    }
+}
+
+// MARK: - AVAudioEngineDelegate
+
+extension SAPlayerPresenter: AudioEngineDelegate {
+    var audioModifiers: [AVAudioUnit] {
+        delegate?.audioModifiers ?? []
+    }
+
+    func didError() {
+        Log.monitor("We should have handled engine error")
+    }
+}
+
+// MARK: - Autoplay
+
+extension SAPlayerPresenter {
+    func playNextAudioIfExists() {
+        Log.info("looking foor next audio in queue to play")
+        guard audioQueue.count > 0 else {
+            Log.info("no queued audio")
+            return
+        }
+        let nextAudioURL = audioQueue.removeFirst()
+
+        Log.info("getting ready to play \(nextAudioURL)")
+        audioQueueDirector.changeInQueue(url: nextAudioURL.url)
+
+        handleClear()
+
+        delegate?.mediaInfo = nextAudioURL.mediaInfo
+
+        switch nextAudioURL.loc {
+        case .remote:
+            handlePlayStreamedAudio(withRemoteUrl: nextAudioURL.url, bitrate: nextAudioURL.bitrate)
+        case .saved:
+            handlePlaySavedAudio(withSavedUrl: nextAudioURL.url)
+        }
+
+        shouldPlayImmediately = true
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/SAPlayerUpdateSubscription.swift b/just_audio/ios/Classes/SAPlayer/SAPlayerUpdateSubscription.swift
new file mode 100644
index 000000000..7993fb906
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/SAPlayerUpdateSubscription.swift
@@ -0,0 +1,252 @@
+//
+//  SAPlayerUpdateSubscription.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-02-18.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+public extension SAPlayer {
+    /**
+     Receive updates for changing values from the player, such as the duration, elapsed time of playing audio, download progress, and etc.
+     */
+    struct Updates {
+        public let elapsedTime: ElapsedTime
+        public let duration: Duration
+        public let playingStatus: PlayingStatus
+        public let streamingBuffer: StreamingBuffer
+        public let audioDownloading: AudioDownloading
+        public let audioQueue: AudioQueue
+
+        init(player: SAPlayer) {
+            elapsedTime = .init(audioClockDirector: player.audioClockDirector)
+            duration = .init(audioClockDirector: player.audioClockDirector)
+            playingStatus = .init(audioClockDirector: player.audioClockDirector)
+            streamingBuffer = .init(audioClockDirector: player.audioClockDirector)
+            audioDownloading = .init(downloadProgressDirector: player.downloadProgressDirector)
+            audioQueue = .init(audioQueueDirector: player.audioQueueDirector)
+        }
+
+        /**
+         Updates to changes in the timestamp/elapsed time of the current initialized audio. Aka, where the scrubber's pointer of the audio should be at.
+         */
+        public struct ElapsedTime {
+            private var audioClockDirector: AudioClockDirector
+
+            internal init(audioClockDirector: AudioClockDirector) {
+                self.audioClockDirector = audioClockDirector
+            }
+
+            /**
+             Subscribe to updates in elapsed time of the playing audio. Aka, the current timestamp of the audio.
+
+             - Note: It's recommended to have a weak reference to a class that uses this function
+
+             - Parameter closure: The closure that will receive the updates of the changes in time.
+             - Parameter timePosition: The current time within the audio that is playing.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(_ closure: @escaping (_ timePosition: Double) -> Void) -> UInt {
+                audioClockDirector.attachToChangesInNeedle(closure: closure)
+            }
+
+            /**
+             Stop recieving updates of changes in elapsed time of audio.
+
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                audioClockDirector.detachFromChangesInNeedle(withID: id)
+            }
+        }
+
+        /**
+         Updates to changes in the duration of the current initialized audio. Especially helpful for audio that is being streamed and can change with more data.
+
+         - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, duration will be constantly updating to best known value at the time (which is the seconds buffered currently and not necessarily the actual total duration of audio).
+         */
+        public struct Duration {
+            private var audioClockDirector: AudioClockDirector
+
+            internal init(audioClockDirector: AudioClockDirector) {
+                self.audioClockDirector = audioClockDirector
+            }
+
+            /**
+             Subscribe to updates to changes in duration of the current audio initialized.
+
+             - Note: If you are streaming from a source that does not have an expected size at the beginning of a stream, such as live streams, duration will be constantly updating to best known value at the time (which is the seconds buffered currently and not necessarily the actual total duration of audio).
+
+             - Note: It's recommended to have a weak reference to a class that uses this function
+
+             - Parameter closure: The closure that will receive the updates of the changes in duration.
+             - Parameter duration: The duration of the current initialized audio.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(_ closure: @escaping (_ duration: Double) -> Void) -> UInt {
+                return audioClockDirector.attachToChangesInDuration(closure: closure)
+            }
+
+            /**
+             Stop recieving updates of changes in duration of the current initialized audio.
+
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                audioClockDirector.detachFromChangesInDuration(withID: id)
+            }
+        }
+
+        /**
+         Updates to changes in the playing/paused status of the player.
+         */
+        public struct PlayingStatus {
+            private var audioClockDirector: AudioClockDirector
+
+            internal init(audioClockDirector: AudioClockDirector) {
+                self.audioClockDirector = audioClockDirector
+            }
+
+            /**
+             Subscribe to updates to changes in the playing/paused status of audio.
+
+             - Note: It's recommended to have a weak reference to a class that uses this function
+
+             - Parameter closure: The closure that will receive the updates of the changes in duration.
+             - Parameter playingStatus: Whether the player is playing audio or paused.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(_ closure: @escaping (_ playingStatus: SAPlayingStatus) -> Void) -> UInt {
+                return audioClockDirector.attachToChangesInPlayingStatus(closure: closure)
+            }
+
+            /**
+             Stop recieving updates of changes in the playing/paused status of audio.
+
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                audioClockDirector.detachFromChangesInPlayingStatus(withID: id)
+            }
+        }
+
+        /**
+         Updates to changes in the progress of downloading audio for streaming. Information about range of audio available and if the audio is playable. Look at `SAAudioAvailabilityRange` for more information.
+         */
+        public struct StreamingBuffer {
+            private var audioClockDirector: AudioClockDirector
+
+            internal init(audioClockDirector: AudioClockDirector) {
+                self.audioClockDirector = audioClockDirector
+            }
+
+            /**
+             Subscribe to updates to changes in the progress of downloading audio for streaming. Information about range of audio available and if the audio is playable. Look at SAAudioAvailabilityRange for more information. For progress of downloading audio that saves to the phone for playback later, look at AudioDownloading instead.
+
+             - Note: For live streams that don't have an expected audio length from the beginning of the stream; the duration is constantly changing and equal to the total seconds buffered from the SAAudioAvailabilityRange.
+
+             - Note: It's recommended to have a weak reference to a class that uses this function
+
+             - Parameter closure: The closure that will receive the updates of the changes in duration.
+             - Parameter buffer: Availabity of audio that has been downloaded to play.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(_ closure: @escaping (_ buffer: SAAudioAvailabilityRange) -> Void) -> UInt {
+                return audioClockDirector.attachToChangesInBufferedRange(closure: closure)
+            }
+
+            /**
+             Stop recieving updates of changes in streaming progress.
+
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                audioClockDirector.detachFromChangesInBufferedRange(withID: id)
+            }
+        }
+
+        /**
+         Updates to changes in the progress of downloading audio in the background. This does not correspond to progress in streaming downloads, look at StreamingBuffer for streaming progress.
+         */
+        public struct AudioDownloading {
+            private var downloadProgressDirector: DownloadProgressDirector
+
+            init(downloadProgressDirector: DownloadProgressDirector) {
+                self.downloadProgressDirector = downloadProgressDirector
+            }
+
+            /**
+             Subscribe to updates to changes in the progress of downloading audio. This does not correspond to progress in streaming downloads, look at StreamingBuffer for streaming progress.
+
+             - Note: It's recommended to have a weak reference to a class that uses this function
+
+             - Parameter closure: The closure that will receive the updates of the changes in duration.
+             - Parameter url: The corresponding remote URL for the updated download progress.
+             - Parameter progress: Value from 0.0 to 1.0 indicating progress of download.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(on player: SAPlayer, _ closure: @escaping (_ url: URL, _ progress: Double) -> Void) -> UInt {
+                return downloadProgressDirector.attach(closure: { key, progress in
+                    guard let url = player.getUrl(forKey: key) else { return }
+                    closure(url, progress)
+                })
+            }
+
+            /**
+             Stop recieving updates of changes in download progress.
+
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                downloadProgressDirector.detach(withID: id)
+            }
+        }
+
+        public struct AudioQueue {
+            private var audioQueueDirector: AudioQueueDirector
+
+            internal init(audioQueueDirector: AudioQueueDirector) {
+                self.audioQueueDirector = audioQueueDirector
+            }
+
+            /**
+             Subscribe to updates to changes in the progress of your audio queue. When streaming audio playback completes
+             and continues onto the next track, the closure is invoked.
+             - Note: It's recommended to have a weak reference to a class that uses this function
+             - Parameter closure: The closure that will receive the updates of the changes in duration.
+             - Parameter url: The corresponding remote URL for the forthcoming audio file.
+             - Returns: the id for the subscription in the case you would like to unsubscribe to updates for the closure.
+             */
+            public func subscribe(_ closure: @escaping (_ newUrl: URL) -> Void) -> UInt {
+                return audioQueueDirector.attach(closure: closure)
+            }
+
+            /**
+             Stop recieving updates of changes in download progress.
+             - Parameter id: The closure with this id will stop receiving updates.
+             */
+            public func unsubscribe(_ id: UInt) {
+                audioQueueDirector.detach(withID: id)
+            }
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/Constants.swift b/just_audio/ios/Classes/SAPlayer/Util/Constants.swift
new file mode 100644
index 000000000..0daf8f8ea
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/Constants.swift
@@ -0,0 +1,37 @@
+//
+//  Constants.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+typealias Needle = Double
+typealias Duration = Double
+typealias Key = String
+typealias AudioURL = URL
+typealias IsPlaying = Bool
+typealias ID = String
+
+typealias NameFile = String // Should have last path component (.mp3)
+
+let DEBOUNCING_BUFFER_TIME: Double = 1.0
diff --git a/just_audio/ios/Classes/SAPlayer/Util/Data.swift b/just_audio/ios/Classes/SAPlayer/Util/Data.swift
new file mode 100644
index 000000000..2ead7bbcd
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/Data.swift
@@ -0,0 +1,54 @@
+//
+//  Data.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-11-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+extension Data {
+    // Introduced in Swift 5, withUnsafeBytes using UnsafePointers is deprecated
+    // https://mjtsai.com/blog/2019/03/27/swift-5-released/
+    func accessBytes<R>(_ body: (UnsafePointer<UInt8>) throws -> R) rethrows -> R {
+        return try withUnsafeBytes { (rawBufferPointer: UnsafeRawBufferPointer) -> R in
+            let unsafeBufferPointer = rawBufferPointer.bindMemory(to: UInt8.self)
+            guard let unsafePointer = unsafeBufferPointer.baseAddress else {
+                Log.error("")
+                var int: UInt8 = 0
+                return try body(&int)
+            }
+            return try body(unsafePointer)
+        }
+    }
+
+    mutating func accessMutableBytes<R>(_ body: (UnsafeMutablePointer<UInt8>) throws -> R) rethrows -> R {
+        return try withUnsafeMutableBytes { (rawBufferPointer: UnsafeMutableRawBufferPointer) -> R in
+            let unsafeMutableBufferPointer = rawBufferPointer.bindMemory(to: UInt8.self)
+            guard let unsafeMutablePointer = unsafeMutableBufferPointer.baseAddress else {
+                Log.error("")
+                var int: UInt8 = 0
+                return try body(&int)
+            }
+            return try body(unsafeMutablePointer)
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/Date.swift b/just_audio/ios/Classes/SAPlayer/Util/Date.swift
new file mode 100644
index 000000000..b0c061979
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/Date.swift
@@ -0,0 +1,51 @@
+//
+//  Date.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+extension Date {
+    /**
+     Finds the 64-bit representation of UTC. rand() uses UTC as a seed, so using the raw UTC should be sufficient for our case.
+
+     - Returns: A 64-bit representation of time.
+     */
+    static func getUTC64() -> UInt {
+        // "On 32-bit platforms, UInt is the same size as UInt32, and on 64-bit platforms, UInt is the same size as UInt64."
+
+        if #available(iOS 11.0, *) {
+            return UInt(Date().timeIntervalSince1970.bitPattern)
+        } else {
+            let time = Date().timeIntervalSince1970.bitPattern & 0xFFFF_FFFF
+            return UInt(time)
+        }
+    }
+
+    /**
+     - Returns: UTC in seconds.
+     */
+    static func getUTC() -> UTC {
+        return Int(Date().timeIntervalSince1970)
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosures.swift b/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosures.swift
new file mode 100644
index 000000000..ded9d5234
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosures.swift
@@ -0,0 +1,101 @@
+//
+//  DirectorThreadSafeClosures.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+/**
+ P for payload
+ */
+class DirectorThreadSafeClosures<P> {
+    typealias TypeClosure = (P) throws -> Void
+    private var queue: DispatchQueue = .init(label: "SwiftAudioPlayer.thread_safe_map", attributes: .concurrent)
+    private var closures: [UInt: TypeClosure] = [:]
+    private var cache: P?
+
+    var count: Int {
+        return closures.count
+    }
+
+    func resetCache() {
+        cache = nil
+    }
+
+    func broadcast(payload: P) {
+        queue.sync {
+            self.cache = payload
+            var iterator = self.closures.makeIterator()
+            while let element = iterator.next() {
+                do {
+                    try element.value(payload)
+                } catch {
+                    helperRemove(withKey: element.key)
+                }
+            }
+        }
+    }
+
+    // UInt is actually 64-bits on modern devices
+    func attach(closure: @escaping TypeClosure) -> UInt {
+        let id: UInt = Date.getUTC64()
+
+        // The director may not yet have the status yet. We should only call the closure if we have it
+        // Let the caller know the immediate value. If it's dead already then stop
+        if let val = cache {
+            do {
+                try closure(val)
+            } catch {
+                return id
+            }
+        }
+
+        // Replace what's in the map with the new closure
+        helperInsert(withKey: id, closure: closure)
+
+        return id
+    }
+
+    func detach(id: UInt) {
+        helperRemove(withKey: id)
+    }
+
+    func clear() {
+        queue.async(flags: .barrier) {
+            self.closures.removeAll()
+            self.cache = nil
+        }
+    }
+
+    private func helperRemove(withKey key: UInt) {
+        queue.async(flags: .barrier) {
+            self.closures[key] = nil
+        }
+    }
+
+    private func helperInsert(withKey key: UInt, closure: @escaping TypeClosure) {
+        queue.async(flags: .barrier) {
+            self.closures[key] = closure
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosuresDeprecated.swift b/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosuresDeprecated.swift
new file mode 100644
index 000000000..297a51d06
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/DirectorThreadSafeClosuresDeprecated.swift
@@ -0,0 +1,104 @@
+//
+//  DirectorThreadSafeClosures.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyright © 2019 Tanha Kabir, Jon Mercer
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in
+//  all copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+//  THE SOFTWARE.
+
+import Foundation
+
+enum DirectorError: Error {
+    case closureIsDead
+}
+
+/**
+ P for payload
+ */
+class DirectorThreadSafeClosuresDeprecated<P> {
+    typealias TypeClosure = (Key, P) throws -> Void
+    private var queue: DispatchQueue = .init(label: "SwiftAudioPlayer.thread_safe_map", attributes: .concurrent)
+    private var closures: [UInt: TypeClosure] = [:]
+    private var cache: [Key: P] = [:]
+
+    var count: Int {
+        return closures.count
+    }
+
+    func broadcast(key: Key, payload: P) {
+        queue.sync { [weak self] in
+            guard let self = self else {
+                return
+            }
+            self.cache[key] = payload
+            var iterator = self.closures.makeIterator()
+            while let element = iterator.next() {
+                do {
+                    try element.value(key, payload)
+                } catch {
+                    helperRemove(withKey: element.key)
+                }
+            }
+        }
+    }
+
+    // UInt is actually 64-bits on modern devices
+    func attach(closure: @escaping TypeClosure) -> UInt {
+        let id: UInt = Date.getUTC64()
+
+        // The director may not yet have the status yet. We should only call the closure if we have it
+        // Let the caller know the immediate value. If it's dead already then stop
+        for (key, val) in cache {
+            do {
+                try closure(key, val)
+            } catch {
+                return id
+            }
+        }
+
+        // Replace what's in the map with the new closure
+        helperInsert(withKey: id, closure: closure)
+
+        return id
+    }
+
+    func detach(id: UInt) {
+        helperRemove(withKey: id)
+    }
+
+    func clear() {
+        queue.async(flags: .barrier) {
+            self.closures.removeAll()
+            self.cache.removeAll()
+        }
+    }
+
+    private func helperRemove(withKey key: UInt) {
+        queue.async(flags: .barrier) {
+            self.closures[key] = nil
+        }
+    }
+
+    private func helperInsert(withKey key: UInt, closure: @escaping TypeClosure) {
+        queue.async(flags: .barrier) {
+            self.closures[key] = closure
+        }
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/Log.swift b/just_audio/ios/Classes/SAPlayer/Util/Log.swift
new file mode 100644
index 000000000..4e4f2ae66
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/Log.swift
@@ -0,0 +1,200 @@
+//
+//  Log.swift
+//  SwiftAudioPlayer
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//  Copyrights to ColorLog
+//  https://cocoapods.org/pods/ColorLog
+
+import Foundation
+import os.log
+
+// Possible levels of log messages to log
+enum LogLevel: Int {
+    case DEBUG = 1
+    case INFO = 2
+    case WARN = 3
+    case ERROR = 4
+    case EXTERNAL_DEBUG = 5
+    case MONITOR = 6
+    case TEST = 7
+}
+
+// Specify which types of log messages to display. Default level is set to WARN, which means Log will print any log messages of type only WARN, ERROR, MONITOR, and TEST. To print DEBUG and INFO logs, set the level to a lower value.
+var logLevel: LogLevel = .MONITOR
+
+class Log {
+    private init() {}
+
+    // Used for OSLog
+    private static let SUBSYSTEM: String = "com.SwiftAudioPlayer"
+
+    /**
+     Used for when you're doing tests. Testing log should be removed before commiting
+
+     How to use: Log.test("this is my message")
+     Output: 13:51:38.487 TEST  ❇️❇️❇️❇️ in InputNameViewController.swift:addContainerToVC():77:: this is test
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func test(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.TEST.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "TEST  ❇️❇️❇️❇️")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+
+    /**
+     Used when something unexpected happen, such as going out of bounds in an array. Errors are typically guarded for.
+
+     How to use: Log.error("this is error")
+     Output: 13:51:38.487 ERROR 🛑🛑🛑🛑 in InputNameViewController.swift:addContainerToVC():76:: this is error
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func error(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.ERROR.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "ERROR 🛑🛑🛑🛑")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+
+        if logLevel.rawValue <= LogLevel.EXTERNAL_DEBUG.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "WARNING")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+
+    /**
+     Used when something catastrophic just happened. Like app about to crash, app state is inconsistent, or possible data corruption.
+
+     How to use: Log.error("this is error")
+     Output: 13:51:38.487 MONITOR 🔥🔥🔥🔥 in InputNameViewController.swift:addContainerToVC():76:: data in corrupted state!
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func monitor(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.ERROR.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "ERROR 🔥🔥🔥🔥")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+
+    /**
+     Used when something went wrong, but the app can still function.
+
+     How to use: Log.warn("this is warn")
+     Output: 13:51:38.487 WARN  ⚠️⚠️⚠️⚠️ in InputNameViewController.swift:addContainerToVC():75:: this is warn
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func warn(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.WARN.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "WARN  ⚠️⚠️⚠️⚠️")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+
+        if logLevel.rawValue <= LogLevel.EXTERNAL_DEBUG.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "DEBUG")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+
+    /**
+     Used when you want to show information like username or question asked.
+
+     How to use: Log.info("this is info")
+     Output: 13:51:38.486 INFO  🖤🖤🖤🖤 in InputNameViewController.swift:addContainerToVC():74:: this is info
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func info(_ logMessage: Any, classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.INFO.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "INFO  🖤🖤🖤🖤")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+
+    /**
+     Used for when you're rebugging and you want to follow what's happening.
+
+     How to use: Log.debug("this is debug")
+     Output: 13:51:38.485 DEBUG 🐝🐝🐝🐝 in InputNameViewController.swift:addContainerToVC():73:: this is debug
+
+     To change the log level, visit the LogLevel enum
+
+     - Parameter logMessage: The message to show
+     - Parameter classPath: automatically generated based on the class that called this function
+     - Parameter functionName: automatically generated based on the function that called this function
+     - Parameter lineNumber: automatically generated based on the line that called this function
+     */
+    public static func debug(_ logMessage: Any?..., classPath: String = #file, functionName: String = #function, lineNumber: Int = #line) {
+        let fileName = URLUtil.getNameFromStringPath(classPath)
+        if logLevel.rawValue <= LogLevel.DEBUG.rawValue {
+            let log = OSLog(subsystem: SUBSYSTEM, category: "DEBUG 🐝🐝🐝🐝")
+            os_log("%@:%@:%d:: %@", log: log, fileName, functionName, lineNumber, "\(logMessage)")
+        }
+    }
+}
+
+// MARK: - Helpers for Log class
+
+private enum URLUtil {
+    static func getNameFromStringPath(_ stringPath: String) -> String {
+        // URL sees that "+" is a " "
+        let stringPath = stringPath.replacingOccurrences(of: " ", with: "+")
+        let url = URL(string: stringPath)
+        return url!.lastPathComponent
+    }
+
+    static func getNameFromURL(_ url: URL) -> String {
+        return url.lastPathComponent
+    }
+}
+
+private extension Date {
+    func timeStamp() -> String {
+        let formatter = DateFormatter()
+        formatter.dateFormat = "HH:mm:ss.SSS"
+        return formatter.string(from: self)
+    }
+}
+
+extension Array where Element == Any? {
+    var toLog: String {
+        var strs: [String] = []
+        for element in self {
+            strs.append("\(element ?? "nil")")
+        }
+        return strs.joined(separator: " |^| ")
+    }
+}
diff --git a/just_audio/ios/Classes/SAPlayer/Util/URL.swift b/just_audio/ios/Classes/SAPlayer/Util/URL.swift
new file mode 100644
index 000000000..4fa360338
--- /dev/null
+++ b/just_audio/ios/Classes/SAPlayer/Util/URL.swift
@@ -0,0 +1,25 @@
+//
+//  URL.swift
+//  Pods-SwiftAudioPlayer_Example
+//
+//  Created by Tanha Kabir on 2019-01-29.
+//
+
+import Foundation
+
+extension URL {
+    var key: String {
+        return "audio_\(absoluteString.hashed)"
+    }
+}
+
+private extension String {
+    var hashed: UInt64 {
+        var result = UInt64(8742)
+        let buf = [UInt8](utf8)
+        for b in buf {
+            result = 127 * (result & 0x00FF_FFFF_FFFF_FFFF) + UInt64(b)
+        }
+        return result
+    }
+}
diff --git a/just_audio/ios/Classes/SwiftJustAudioPlugin.swift b/just_audio/ios/Classes/SwiftJustAudioPlugin.swift
new file mode 100644
index 000000000..97c255df6
--- /dev/null
+++ b/just_audio/ios/Classes/SwiftJustAudioPlugin.swift
@@ -0,0 +1,115 @@
+import AVFAudio
+import Flutter
+import UIKit
+
+@available(iOS 13.0, *)
+public class SwiftJustAudioPlugin: NSObject, FlutterPlugin {
+    var players: [String: SwiftPlayer] = [:]
+    let registrar: FlutterPluginRegistrar
+    let engine: AVAudioEngine!
+    let errorsChannel: BetterEventChannel
+
+    init(registrar: FlutterPluginRegistrar) {
+        self.registrar = registrar
+        engine = AVAudioEngine()
+        errorsChannel = BetterEventChannel(name: "com.ryanheise.just_audio.errors", messenger: self.registrar.messenger())
+    }
+
+    public static func register(with registrar: FlutterPluginRegistrar) {
+        let channel = FlutterMethodChannel(name: "com.ryanheise.just_audio.methods", binaryMessenger: registrar.messenger())
+        let instance = SwiftJustAudioPlugin(registrar: registrar)
+        registrar.addMethodCallDelegate(instance, channel: channel)
+    }
+
+    public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        do {
+            let command: SwiftJustAudioPluginCommand = SwiftJustAudioPluginCommand.parse(call.method)
+
+            switch command {
+            case .`init`:
+                try onInit(request: call.arguments as! [String: Any])
+                result(nil)
+            case .disposePlayer:
+                try onDisposePlayer(request: call.arguments as! [String: Any])
+                result([:])
+            case .disposeAllPlayers:
+                onDisposeAllPlayers()
+                result([:])
+            }
+        } catch let error as SwiftJustAudioPluginError {
+            result(error.flutterError)
+        } catch {
+            result(FlutterError(code: "500", message: error.localizedDescription, details: nil))
+        }
+    }
+}
+
+// MARK: - SwiftJustAudioPlugin commands handles
+
+@available(iOS 13.0, *)
+extension SwiftJustAudioPlugin {
+    private func onInit(request: [String: Any?]) throws {
+        guard let id = request["id"] as? String else {
+            return
+        }
+
+        let playerId = id
+
+        guard !players.keys.contains(playerId) else {
+            throw SwiftJustAudioPluginError.platformAlreadyExists
+        }
+
+        var effectsRaw: [[String: Any?]] = request.keys.contains("darwinAudioEffects") ? (request["darwinAudioEffects"] as! [[String: Any?]]) : []
+
+        let equalizerRaw = effectsRaw.filter { rawEffect in
+            (rawEffect["type"] as! String) == "DarwinEqualizer"
+        }.first
+
+        // exclude equalizer
+        effectsRaw = effectsRaw.filter { rawEffect in
+            (rawEffect["type"] as! String) != "DarwinEqualizer"
+        }
+
+        var shouldWriteOutputToFile = false
+        if let audioLoadConfiguration = request["audioLoadConfiguration"] as? [String: Any] {
+            if let darwinLoadControl = audioLoadConfiguration["darwinLoadControl"] as? [String: Any] {
+                shouldWriteOutputToFile = (darwinLoadControl["writeFinalOutputToFile"] as? Bool) ?? false
+            }
+        }
+
+        let equalizer = equalizerRaw != nil ? try Equalizer.parse(from: equalizerRaw!) : nil
+
+        let player = SwiftPlayer.Builder()
+            .withErrorsChannel(errorsChannel)
+            .withAudioEffects(effectsRaw.map {
+                let (_, audioEffect) = DarwinAudioEffect.parseEffectFrom(map: $0)
+                return audioEffect
+            })
+            .withPlayerId(id)
+            .withMessenger(messenger: registrar.messenger())
+            .withAudioEngine(engine)
+            .withShouldWriteOutputToFile(shouldWriteOutputToFile)
+            .withEqualizer(equalizer)
+            .build()
+
+        players[playerId] = player
+    }
+
+    private func onDisposePlayer(request: [String: Any]) throws {
+        guard let id = request["id"] as? String else {
+            return
+        }
+
+        if let player = players[id] {
+            player.dispose()
+            players.removeValue(forKey: id)?.dispose()
+            engine.stop()
+        }
+    }
+
+    private func onDisposeAllPlayers() {
+        players.forEach { _, player in player.dispose() }
+        players.removeAll()
+        engine.stop()
+    }
+}
diff --git a/just_audio/ios/Classes/SwiftJustAudioPluginError.swift b/just_audio/ios/Classes/SwiftJustAudioPluginError.swift
new file mode 100644
index 000000000..94186cf8c
--- /dev/null
+++ b/just_audio/ios/Classes/SwiftJustAudioPluginError.swift
@@ -0,0 +1,44 @@
+//
+//  PluginErrors.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum SwiftJustAudioPluginError: Error {
+    case notSupportedError(value: Any, message: String)
+    case notInitializedError(message: String)
+    case notImplementedError(message: String)
+    case platformAlreadyExists
+
+    public var flutterError: FlutterError {
+        switch self {
+        case let .notSupportedError(value: value, message: message):
+            return FlutterError(code: "400", message: "Requested \(value) is not supported\n\(message)", details: nil)
+        case let .notInitializedError(message: message):
+            return FlutterError(code: "403", message: message, details: nil)
+        case let .notImplementedError(message: message):
+            return FlutterError(code: "500", message: message, details: nil)
+        case .platformAlreadyExists:
+            return FlutterError(code: "503", message: "Platform player already exists", details: nil)
+        }
+    }
+}
+
+extension Error {
+    func toFlutterError(_ details: String?) -> FlutterError {
+        return FlutterError(code: "500", message: localizedDescription, details: details)
+    }
+}
+
+extension FlutterError {
+    func toMap() -> [String: Any?] {
+        return [
+            "code": code,
+            "message": message,
+            "description": description,
+        ]
+    }
+}
diff --git a/just_audio/ios/Classes/SwiftPlayer.swift b/just_audio/ios/Classes/SwiftPlayer.swift
new file mode 100644
index 000000000..7135fe752
--- /dev/null
+++ b/just_audio/ios/Classes/SwiftPlayer.swift
@@ -0,0 +1,500 @@
+import AVFoundation
+import Combine
+import Flutter
+
+@available(iOS 13.0, *)
+internal class SwiftPlayer: NSObject {
+    let errorsChannel: BetterEventChannel
+
+    let playerId: String
+    @Published var globalAudioEffects: [String: AudioEffect]
+    @Published var audioSourcesAudioEffects: [String: AudioEffect] = [:]
+
+    let methodChannel: FlutterMethodChannel
+    let eventChannel: BetterEventChannel
+    let dataChannel: BetterEventChannel
+
+    var player: JustAudioPlayer!
+    private var engine: AVAudioEngine!
+    private var equalizer: Equalizer?
+    private var shouldWriteOutputToFile: Bool = false
+
+    var cancellables: [AnyCancellable] = []
+
+    class Builder {
+        private var messenger: FlutterBinaryMessenger!
+        private var errorsChannel: BetterEventChannel!
+        private var playerId: String!
+        private var audioEffects: [AudioEffect]!
+        private var engine: AVAudioEngine!
+        private var equalizer: Equalizer?
+        private var shouldWriteOutputToFile: Bool = false
+
+        func withMessenger(messenger: FlutterBinaryMessenger) -> Builder {
+            self.messenger = messenger
+            return self
+        }
+
+        func withErrorsChannel(_ errorsChannel: BetterEventChannel) -> Builder {
+            self.errorsChannel = errorsChannel
+            return self
+        }
+
+        func withPlayerId(_ playerId: String) -> Builder {
+            self.playerId = playerId
+            return self
+        }
+
+        func withAudioEffects(_ audioEffects: [AudioEffect]) -> Builder {
+            self.audioEffects = audioEffects
+            return self
+        }
+
+        func withAudioEngine(_ engine: AVAudioEngine) -> Builder {
+            self.engine = engine
+            return self
+        }
+
+        func withShouldWriteOutputToFile(_ shouldWriteOutputToFile: Bool) -> Builder {
+            self.shouldWriteOutputToFile = shouldWriteOutputToFile
+            return self
+        }
+
+        func withEqualizer(_ equalizer: Equalizer?) -> Builder {
+            self.equalizer = equalizer
+            return self
+        }
+
+        func build() -> SwiftPlayer {
+            return SwiftPlayer(
+                messenger: messenger,
+                errorsChannel: errorsChannel,
+                playerId: playerId,
+                shouldWriteOutputToFile: shouldWriteOutputToFile,
+                audioEffects: audioEffects,
+                engine: engine,
+                equalizer: equalizer
+            )
+        }
+    }
+
+    private init(
+        messenger: FlutterBinaryMessenger,
+        errorsChannel: BetterEventChannel,
+        playerId: String,
+        shouldWriteOutputToFile: Bool,
+        audioEffects: [AudioEffect],
+        engine: AVAudioEngine,
+        equalizer: Equalizer?
+    ) {
+        self.errorsChannel = errorsChannel
+
+        self.playerId = playerId
+        let effects: [String: AudioEffect] = [:]
+
+        globalAudioEffects = audioEffects.reduce(into: effects) { partialResult, audioEffect in
+            partialResult[UUID().uuidString] = audioEffect
+        }
+
+        self.engine = engine
+
+        methodChannel = FlutterMethodChannel(name: Util.methodsChannel(forPlayer: playerId), binaryMessenger: messenger)
+        eventChannel = BetterEventChannel(name: Util.eventsChannel(forPlayer: playerId), messenger: messenger)
+        dataChannel = BetterEventChannel(name: Util.dataChannel(forPlayer: playerId), messenger: messenger)
+
+        self.equalizer = equalizer
+        self.shouldWriteOutputToFile = shouldWriteOutputToFile
+
+        super.init()
+
+        methodChannel.setMethodCallHandler { call, result in
+            self.handleMethodCall(call: call, result: result)
+        }
+    }
+
+    func handleMethodCall(call: FlutterMethodCall, result: @escaping FlutterResult) {
+        do {
+            let command = try SwiftPlayerCommand.parse(call.method)
+
+            let request = call.arguments as? [String: Any] ?? [:]
+
+            // Uncomment for debug
+            // print("\ncommand: \(String(describing: call.method))")
+            // print("request: \(String(describing: call.arguments))")
+
+            // ensure inner instance
+            if player == nil {
+                try initPlayer()
+            }
+
+            switch command {
+            case .load:
+                try onLoad(request: request)
+            case .play:
+                try player.play()
+            case .pause:
+                player.pause()
+            case .seek:
+                let time = Util.timeFrom(microseconds: request["position"] as! Int64)
+                let index = request["index"] as? Int
+                player.seek(second: time.seconds, index: index)
+            case .setVolume:
+                try player.setVolume(Float(request["volume"] as! Double))
+            case .setSpeed:
+                try player.setSpeed(Float(request["speed"] as! Double))
+            case .setPitch:
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .setSkipSilence:
+                // TODO: this is supported in SwiftAudioPlayer but not exposed in JustAudioPlayer
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .setLoopMode:
+                player.setLoopMode(Util.loopModeFrom(request["loopMode"] as! Int))
+            case .setShuffleMode:
+                player.setShuffleModeEnabled(Util.parseShuffleModeEnabled(request["shuffleMode"] as! Int))
+            case .setShuffleOrder:
+                try onSetShuffleOrder(request: request)
+            case .setAutomaticallyWaitsToMinimizeStalling:
+                // android is still to be implemented too
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .setCanUseNetworkResourcesForLiveStreamingWhilePaused:
+                // android is still to be implemented too
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .setPreferredPeakBitRate:
+                // android is still to be implemented too
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .dispose:
+                player.stop()
+            case .concatenatingInsertAll:
+
+                let children = request["children"] as! [[String: Any?]]
+
+                try children.forEach {
+                    let (_, audioSequence) = try FlutterAudioSourceType.parseAudioSequenceFrom(map: $0)
+                    player.addAudioSource(audioSequence)
+                }
+
+                try onSetShuffleOrder(request: request)
+            case .concatenatingRemoveRange:
+
+                let startIndex = request["startIndex"] as! Int
+                let endIndex = request["endIndex"] as! Int
+
+                let range = startIndex ... endIndex
+                for index in range {
+                    try player.removeAudioSource(at: index)
+                }
+
+                try onSetShuffleOrder(request: request)
+            case .concatenatingMove:
+                // TODO:
+                throw SwiftJustAudioPluginError.notImplementedError(message: call.method)
+            case .audioEffectSetEnabled:
+                try onAudioEffectSetEnabled(request)
+            case .darwinEqualizerBandSetGain:
+                try onEqualizerBandSetGain(request)
+            case .darwinWriteOutputToFile:
+                try player.writeOutputToFile()
+            case .darwinStopWriteOutputToFile:
+                player.stopWritingOutputFile()
+            case .darwinDelaySetTargetDelayTime:
+                guard let effect: DelayAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+
+                let targetDelayTime = request["targetDelayTime"] as! Double
+                effect.setDelayTime(targetDelayTime)
+
+            case .darwinDelaySetTargetFeedback:
+                guard let effect: DelayAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+
+                let feedback = request["feedback"] as! Double
+
+                effect.setFeedback(Float(feedback))
+            case .darwinDelaySetLowPassCutoff:
+                guard let effect: DelayAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+
+                let lowPassCutoff = request["lowPassCutoff"] as! Double
+                effect.setLowPassCutoff(Float(lowPassCutoff))
+            case .darwinDelaySetWetDryMix:
+                guard let effect: DelayAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+
+                let wetDryMix = request["wetDryMix"] as! Double
+                effect.setWetDryMix(Float(wetDryMix))
+            case .darwinDistortionSetWetDryMix:
+                guard let effect: DistortionAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+                let wetDryMix = request["wetDryMix"] as! Double
+                effect.setWetDryMix(Float(wetDryMix))
+            case .darwinDistortionSetPreGain:
+                guard let effect: DistortionAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+
+                let preGain = request["preGain"] as! Double
+                effect.setPreGain(Float(preGain))
+            case .darwinDistortionSetPreset:
+                guard let effect: DistortionAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+                guard let preset = AVAudioUnitDistortionPreset(rawValue: request["preset"] as! Int) else {
+                    return
+                }
+
+                effect.setPreset(preset)
+            case .darwinReverbSetPreset:
+                guard let effect: ReverbAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+                guard let preset = AVAudioUnitReverbPreset(rawValue: request["preset"] as! Int) else {
+                    return
+                }
+
+                effect.setPreset(preset)
+            case .darwinReverbSetWetDryMix:
+                guard let effect: ReverbAudioEffect = getEffectByRequest(request) else {
+                    return
+                }
+                let wetDryMix = request["wetDryMix"] as! Double
+                effect.setWetDryMix(Float(wetDryMix))
+            }
+
+            result([:])
+
+        } catch let error as SwiftJustAudioPluginError {
+            result(error.flutterError)
+        } catch {
+            result(FlutterError(code: "510", message: "\(error)", details: nil))
+        }
+    }
+
+    func dispose() {
+        player.stop()
+        eventChannel.dispose()
+        dataChannel.dispose()
+        methodChannel.setMethodCallHandler(nil)
+
+        cancellables.forEach { cancellable in
+            cancellable.cancel()
+        }
+    }
+
+    private func getEffectByRequest<T: AudioEffect>(_ request: [String: Any?]) -> T? {
+        guard let effectId = request["id"] as? String else {
+            return nil
+        }
+
+        guard let effect = getEffectById(effectId) else {
+            return nil
+        }
+
+        guard let effect = effect as? T else {
+            return nil
+        }
+
+        return effect
+    }
+
+    private func getEffectById(_ id: String) -> AudioEffect? {
+        guard let effect = globalAudioEffects[id] else {
+            return audioSourcesAudioEffects[id]
+        }
+
+        return effect
+    }
+}
+
+// MARK: - SwiftPlayer init player extension
+
+@available(iOS 13.0, *)
+extension SwiftPlayer {
+    func initPlayer() throws {
+        player = JustAudioPlayer(engine: engine)
+
+        if let safeEqualizer = equalizer {
+            try player.setEqualizer(safeEqualizer)
+        }
+
+        globalAudioEffects.forEach { _, audioEffect in
+            player.addAudioEffect(audioEffect)
+        }
+
+        if shouldWriteOutputToFile {
+            try player.writeOutputToFile()
+        }
+
+        subscribeToPlayerEvents()
+    }
+}
+
+// MARK: - SwiftPlayer handle extensions
+
+@available(iOS 13.0, *)
+extension SwiftPlayer {
+    func onLoad(request: [String: Any?]) throws {
+        let (effects, audioSequence) = try FlutterAudioSourceType.parseAudioSequenceFrom(map: request)
+        player.addAudioSource(audioSequence)
+
+        audioSourcesAudioEffects = effects.reduce(into: audioSourcesAudioEffects) { partialResult, audioEffectWithId in
+            let (id, effect) = audioEffectWithId
+            partialResult[id] = effect
+        }
+
+        try onSetShuffleOrder(request: request)
+    }
+
+    func onSetShuffleOrder(request: [String: Any?]) throws {
+        guard let shuffleOrder = request["shuffleOrder"] as? [Int] else {
+            return
+        }
+
+        try player.shuffle(at: 0, inOrder: shuffleOrder)
+    }
+
+    func onAudioEffectSetEnabled(_ request: [String: Any]) throws {
+        let rawType = request["type"] as! String
+        let enabled = request["enabled"] as! Bool
+
+        if rawType == "DarwinEqualizer" {
+            if enabled {
+                try player.activateEqualizerPreset(at: 0)
+            } else {
+                try player.resetGains()
+            }
+
+            return
+        }
+
+        guard let effect = getEffectById(request["id"] as! String) else {
+            return
+        }
+
+        if let reverb = effect as? ReverbAudioEffect {
+            reverb.setBypass(false) // Don't know why, but bypassing the reverb causes no final output
+            if enabled == false {
+                reverb.setWetDryMix(0)
+            }
+        } else {
+            effect.setBypass(!enabled)
+        }
+    }
+
+    func onEqualizerBandSetGain(_ request: [String: Any]) throws {
+        let bandIndex = request["bandIndex"] as! Int
+        let gain = request["gain"] as! Double
+        try player.tweakEqualizerBandGain(band: bandIndex, gain: Float(gain))
+    }
+}
+
+// MARK: - SwiftPlayer streams
+
+@available(iOS 13.0, *)
+extension SwiftPlayer {
+    func subscribeToPlayerEvents() {
+        guard let safePlayer = player else {
+            return
+        }
+
+        // data channel
+        let outputPublishers = Publishers.CombineLatest(
+            safePlayer.$outputAbsolutePath,
+            safePlayer.$outputWriteError
+        )
+
+        let playerInfoPublishers = Publishers.CombineLatest3(
+            safePlayer.$isPlaying,
+            safePlayer.$volume,
+            safePlayer.$speed
+        )
+
+        let sideInfosPublishers = Publishers.CombineLatest(
+            safePlayer.$loopMode,
+            safePlayer.isShuffling
+        )
+
+        Publishers.CombineLatest3(
+            outputPublishers,
+            playerInfoPublishers,
+            sideInfosPublishers
+        )
+        .map { outputAbsoluteInfo, playerInfoPublishers, sideInfosPublishers in
+            DataChannelMessage(
+                outputAbsolutePath: outputAbsoluteInfo.0,
+                outputError: outputAbsoluteInfo.1,
+                playing: playerInfoPublishers.0,
+                volume: playerInfoPublishers.1,
+                speed: playerInfoPublishers.2,
+                loopMode: sideInfosPublishers.0,
+                shuffleMode: sideInfosPublishers.1
+            )
+        }
+        .throttle(for: .milliseconds(500), scheduler: DispatchQueue.main, latest: true)
+        .receive(on: DispatchQueue.main)
+        .sink(receiveValue: { [weak self] event in
+            self?.dataChannel.sendEvent(event.toMap())
+        })
+        .store(in: &cancellables)
+
+        // event channel
+        let trackInfos = Publishers.CombineLatest3(
+            safePlayer.$bufferPosition,
+            safePlayer.$duration,
+            safePlayer.$elapsedTime
+        )
+
+        let mainInfos = Publishers.CombineLatest(
+            safePlayer.$processingState,
+            safePlayer.$queueIndex
+        )
+
+        let playerDataSource = Publishers.CombineLatest(
+            trackInfos,
+            mainInfos
+        )
+
+        let effectsDataSource = Publishers.CombineLatest3(
+            safePlayer.$equalizer,
+            $globalAudioEffects,
+            $audioSourcesAudioEffects
+        )
+
+        Publishers.CombineLatest(
+            playerDataSource,
+            effectsDataSource
+        ).map { playerData, effectsData -> EventChannelMessage in
+            let trackInfos = playerData.0
+            let mainInfos = playerData.1
+
+            let equalizerData = effectsData.0
+            let globalEffects = effectsData.1
+            let audioSourceEffects = effectsData.2
+            return EventChannelMessage(
+                processingState: mainInfos.0,
+                elapsedTime: safePlayer.elapsedTime,
+                bufferedPosition: trackInfos.0,
+                duration: trackInfos.1,
+                currentIndex: mainInfos.1,
+                equalizerData: equalizerData,
+                globalEffects: globalEffects,
+                audioSourceEffects: audioSourceEffects
+            )
+        }
+        .throttle(for: .milliseconds(500), scheduler: DispatchQueue.main, latest: true)
+        .receive(on: DispatchQueue.main)
+        .sink(receiveValue: { [weak self] event in
+            do {
+                self?.eventChannel.sendEvent(try event.toMap())
+            } catch {
+                self?.errorsChannel.sendEvent(error.toFlutterError("When the player emt a new event and fails to serialize it").toMap())
+            }
+
+        })
+        .store(in: &cancellables)
+    }
+}
diff --git a/just_audio/ios/Classes/UriAudioSource.h b/just_audio/ios/Classes/UriAudioSource.h
deleted file mode 100644
index cd8ac49fc..000000000
--- a/just_audio/ios/Classes/UriAudioSource.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#import "IndexedAudioSource.h"
-#import "LoadControl.h"
-#import <Flutter/Flutter.h>
-
-@interface UriAudioSource : IndexedAudioSource
-
-@property (readonly, nonatomic) NSString *uri;
-
-- (instancetype)initWithId:(NSString *)sid uri:(NSString *)uri loadControl:(LoadControl *)loadControl;
-
-@end
diff --git a/just_audio/ios/Classes/UriAudioSource.m b/just_audio/ios/Classes/UriAudioSource.m
deleted file mode 120000
index 8effbd7cb..000000000
--- a/just_audio/ios/Classes/UriAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/UriAudioSource.m
\ No newline at end of file
diff --git a/just_audio/ios/Classes/Util.swift b/just_audio/ios/Classes/Util.swift
new file mode 100644
index 000000000..bc99f32ac
--- /dev/null
+++ b/just_audio/ios/Classes/Util.swift
@@ -0,0 +1,46 @@
+//
+//  Util.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct Util {
+    static func timeFrom(microseconds: Int64) -> CMTime {
+        return CMTimeMake(value: microseconds, timescale: 1_000_000)
+    }
+
+    static func loopModeFrom(_ value: Int) -> LoopMode {
+        switch value {
+        case 1:
+            return LoopMode.one
+        case 2:
+            return LoopMode.all
+        default:
+            return LoopMode.off
+        }
+    }
+
+    static func parseShuffleModeEnabled(_ value: Int) -> Bool {
+        return value == 1
+    }
+
+    static func gainFrom(_ value: Float) -> Float {
+        // Equalize the level between iOS and android
+        return value * 2.8
+    }
+
+    static func methodsChannel(forPlayer playerId: String) -> String {
+        return String(format: "com.ryanheise.just_audio.methods.%@", playerId)
+    }
+
+    static func eventsChannel(forPlayer playerId: String) -> String {
+        return String(format: "com.ryanheise.just_audio.events.%@", playerId)
+    }
+
+    static func dataChannel(forPlayer playerId: String) -> String {
+        return String(format: "com.ryanheise.just_audio.data.%@", playerId)
+    }
+}
diff --git a/just_audio/ios/just_audio.podspec b/just_audio/ios/just_audio.podspec
index ba5c7d261..352a5590a 100644
--- a/just_audio/ios/just_audio.podspec
+++ b/just_audio/ios/just_audio.podspec
@@ -1,5 +1,6 @@
 #
-# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint just_audio.podspec` to validate before publishing.
 #
 Pod::Spec.new do |s|
   s.name             = 'just_audio'
@@ -13,9 +14,11 @@ A new flutter plugin project.
   s.author           = { 'Your Company' => 'email@example.com' }
   s.source           = { :path => '.' }
   s.source_files = 'Classes/**/*'
-  s.public_header_files = 'Classes/**/*.h'
+
   s.dependency 'Flutter'
-  s.platform = :ios, '8.0'
-  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'VALID_ARCHS[sdk=iphonesimulator*]' => 'x86_64' }
-end
+  s.platform = :ios, '13.0'
 
+  # Flutter.framework does not contain a i386 slice.
+  s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
+  s.swift_version = '5.0'
+end
diff --git a/just_audio/lib/just_audio.dart b/just_audio/lib/just_audio.dart
index b8bf7e278..63a213092 100644
--- a/just_audio/lib/just_audio.dart
+++ b/just_audio/lib/just_audio.dart
@@ -15,6 +15,16 @@ import 'package:path_provider/path_provider.dart';
 import 'package:rxdart/rxdart.dart';
 import 'package:uuid/uuid.dart';
 
+export 'package:just_audio_platform_interface/just_audio_platform_interface.dart'
+    show
+        DarwinEqualizerParametersMessage,
+        DarwinEqualizerBandMessage,
+        DarwinDistortionPreset,
+        DarwinDistortionMessage,
+        DarwinReverbPreset,
+        DarwinReverbMessage,
+        DarwinDelayMessage;
+
 const _uuid = Uuid();
 
 JustAudioPlatform? _pluginPlatformCache;
@@ -123,10 +133,13 @@ class AudioPlayer {
   final _sequenceStateSubject = BehaviorSubject<SequenceState?>();
   final _loopModeSubject = BehaviorSubject.seeded(LoopMode.off);
   final _shuffleModeEnabledSubject = BehaviorSubject.seeded(false);
+  final _outputAbsolutePathSubject = BehaviorSubject<String?>();
+  final _outputErrorSubject = BehaviorSubject<String?>();
   final _androidAudioSessionIdSubject = BehaviorSubject<int?>();
   final _positionDiscontinuitySubject =
       PublishSubject<PositionDiscontinuity>(sync: true);
   var _seeking = false;
+
   // ignore: close_sinks
   BehaviorSubject<Duration>? _positionSubject;
   bool _automaticallyWaitsToMinimizeStalling = true;
@@ -189,15 +202,21 @@ class AudioPlayer {
     _processingStateSubject.addStream(playbackEventStream
         .map((event) => event.processingState)
         .distinct()
-        .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+        .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _bufferedPositionSubject.addStream(playbackEventStream
         .map((event) => event.bufferedPosition)
         .distinct()
-        .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+        .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _icyMetadataSubject.addStream(playbackEventStream
         .map((event) => event.icyMetadata)
         .distinct()
-        .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+        .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     playbackEventStream.pairwise().listen((pair) {
       final prev = pair.first;
       final curr = pair.last;
@@ -208,32 +227,37 @@ class AudioPlayer {
         // If we've changed item without seeking, it must be an autoAdvance.
         _positionDiscontinuitySubject.add(PositionDiscontinuity(
             PositionDiscontinuityReason.autoAdvance, prev, curr));
-      } else {
-        // If the item is the same, try to determine whether we have looped
-        // back.
-        final prevPos = _getPositionFor(prev);
-        final currPos = _getPositionFor(curr);
-        if (loopMode != LoopMode.one) return;
-        if (currPos >= prevPos) return;
-        if (currPos >= const Duration(milliseconds: 300)) return;
-        final duration = this.duration;
-        if (duration != null && prevPos < duration * 0.6) return;
-        if (duration == null &&
-            currPos - prevPos < const Duration(seconds: 1)) {
-          return;
-        }
-        _positionDiscontinuitySubject.add(PositionDiscontinuity(
-            PositionDiscontinuityReason.autoAdvance, prev, curr));
+
+        return;
       }
+
+      // If the item is the same, try to determine whether we have looped
+      // back.
+      final prevPos = _getPositionFor(prev);
+      final currPos = _getPositionFor(curr);
+      if (loopMode != LoopMode.one) return;
+      if (currPos >= prevPos) return;
+      if (currPos >= const Duration(milliseconds: 300)) return;
+      final duration = this.duration;
+      if (duration != null && prevPos < duration * 0.6) return;
+      if (duration == null && currPos - prevPos < const Duration(seconds: 1)) {
+        return;
+      }
+      _positionDiscontinuitySubject.add(PositionDiscontinuity(
+          PositionDiscontinuityReason.autoAdvance, prev, curr));
     }, onError: (Object e, StackTrace st) {});
     _currentIndexSubject.addStream(playbackEventStream
         .map((event) => event.currentIndex)
         .distinct()
-        .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+        .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _androidAudioSessionIdSubject.addStream(playbackEventStream
         .map((event) => event.androidAudioSessionId)
         .distinct()
-        .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+        .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _sequenceStateSubject.addStream(Rx.combineLatest5<List<IndexedAudioSource>?,
         List<int>?, int?, bool, LoopMode, SequenceState?>(
       sequenceStream,
@@ -254,14 +278,18 @@ class AudioPlayer {
           loopMode,
         );
       },
-    ).distinct().handleError((Object err, StackTrace stackTrace) {/* noop */}));
+    ).distinct().handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _playerStateSubject.addStream(
         Rx.combineLatest2<bool, PlaybackEvent, PlayerState>(
                 playingStream,
                 playbackEventStream,
                 (playing, event) => PlayerState(playing, event.processingState))
             .distinct()
-            .handleError((Object err, StackTrace stackTrace) {/* noop */}));
+            .handleError((Object err, StackTrace stackTrace) {
+      /* noop */
+    }));
     _shuffleModeEnabledSubject.add(false);
     _loopModeSubject.add(LoopMode.off);
     _setPlatformActive(false, force: true)
@@ -278,52 +306,55 @@ class AudioPlayer {
             .listen(setAndroidAudioAttributes);
       });
     }
-    if (handleInterruptions) {
-      AudioSession.instance.then((session) {
-        session.becomingNoisyEventStream.listen((_) {
-          pause();
-        });
-        session.interruptionEventStream.listen((event) {
-          if (event.begin) {
-            switch (event.type) {
-              case AudioInterruptionType.duck:
-                assert(_isAndroid());
-                if (session.androidAudioAttributes!.usage ==
-                    AndroidAudioUsage.game) {
-                  setVolume(volume / 2);
-                }
-                _playInterrupted = false;
-                break;
-              case AudioInterruptionType.pause:
-              case AudioInterruptionType.unknown:
-                if (playing) {
-                  pause();
-                  // Although pause is async and sets _playInterrupted = false,
-                  // this is done in the sync portion.
-                  _playInterrupted = true;
-                }
-                break;
-            }
-          } else {
-            switch (event.type) {
-              case AudioInterruptionType.duck:
-                assert(_isAndroid());
-                setVolume(min(1.0, volume * 2));
-                _playInterrupted = false;
-                break;
-              case AudioInterruptionType.pause:
-                if (_playInterrupted) play();
-                _playInterrupted = false;
-                break;
-              case AudioInterruptionType.unknown:
-                _playInterrupted = false;
-                break;
-            }
+
+    _removeOldAssetCacheDir();
+    if (!handleInterruptions) return;
+
+    AudioSession.instance.then((session) {
+      session.becomingNoisyEventStream.listen((_) {
+        pause();
+      });
+      session.interruptionEventStream.listen((event) {
+        if (event.begin) {
+          switch (event.type) {
+            case AudioInterruptionType.duck:
+              assert(_isAndroid());
+              if (session.androidAudioAttributes!.usage ==
+                  AndroidAudioUsage.game) {
+                setVolume(volume / 2);
+              }
+              _playInterrupted = false;
+              break;
+            case AudioInterruptionType.pause:
+            case AudioInterruptionType.unknown:
+              if (playing) {
+                pause();
+                // Although pause is async and sets _playInterrupted = false,
+                // this is done in the sync portion.
+                _playInterrupted = true;
+              }
+              break;
           }
-        });
+
+          return;
+        }
+
+        switch (event.type) {
+          case AudioInterruptionType.duck:
+            assert(_isAndroid());
+            setVolume(min(1.0, volume * 2));
+            _playInterrupted = false;
+            break;
+          case AudioInterruptionType.pause:
+            if (_playInterrupted) play();
+            _playInterrupted = false;
+            break;
+          case AudioInterruptionType.unknown:
+            _playInterrupted = false;
+            break;
+        }
       });
-    }
-    _removeOldAssetCacheDir();
+    });
   }
 
   /// Old versions of just_audio used an asset caching system that created a
@@ -462,6 +493,15 @@ class AudioPlayer {
   Stream<SequenceState?> get sequenceStateStream =>
       _sequenceStateSubject.stream;
 
+  Stream<String?> get outputAbsolutePathStream =>
+      _outputAbsolutePathSubject.stream;
+
+  Stream<String?> get outputErrorStream => _outputErrorSubject.stream;
+
+  String? get outputAbsolutePath => _outputAbsolutePathSubject.nvalue;
+
+  String? get outputError => _outputErrorSubject.nvalue;
+
   /// Whether there is another item after the current index.
   bool get hasNext => nextIndex != null;
 
@@ -560,9 +600,8 @@ class AudioPlayer {
       return playbackEvent.duration == null || result <= playbackEvent.duration!
           ? result
           : playbackEvent.duration!;
-    } else {
-      return playbackEvent.updatePosition;
     }
+    return playbackEvent.updatePosition;
   }
 
   /// A stream tracking the current position of this player, suitable for
@@ -769,10 +808,9 @@ class AudioPlayer {
       _initialSeekValues = null;
       return await _load(await _platform, _audioSource!,
           initialSeekValues: initialSeekValues);
-    } else {
-      // This will implicitly load the current audio source.
-      return await _setPlatformActive(true);
     }
+    // This will implicitly load the current audio source.
+    return await _setPlatformActive(true);
   }
 
   void _broadcastSequence() {
@@ -841,9 +879,8 @@ class AudioPlayer {
       } on FormatException catch (_) {
         if (e.code == 'abort') {
           throw PlayerInterruptedException(e.message);
-        } else {
-          throw PlayerException(9999999, e.message);
         }
+        throw PlayerException(9999999, e.message);
       }
     }
   }
@@ -868,6 +905,29 @@ class AudioPlayer {
     return duration;
   }
 
+  /// Tells the player to stop recording all the output to a file.
+  ///
+  /// The previous output file will not be deleted.
+  /// This has only effect on iOS/MacOS.
+  Future<void> stopWritingOutputToFile() async {
+    if (_disposed) return;
+
+    await (await _platform).darwinStopWriteOutputToFile();
+    _outputAbsolutePathSubject.add(null);
+  }
+
+  /// Tells the player to record all the output to a file.
+  ///
+  /// Returns the output file full path.
+  /// This has only effect on iOS/MacOS.
+  Future<String?> writeOutputToFile() async {
+    if (_disposed) return null;
+
+    final response = await (await _platform).darwinWriteOutputToFile();
+    _outputAbsolutePathSubject.add(response.outputFileFullPath);
+    return response.outputFileFullPath;
+  }
+
   /// Tells the player to play audio at the current [speed] and [volume] as soon
   /// as an audio source is loaded and ready to play. If an audio source has
   /// been set but not preloaded, this method will also initiate the loading.
@@ -886,8 +946,8 @@ class AudioPlayer {
   /// This method activates the audio session before playback, and will do
   /// nothing if activation of the audio session fails for any reason.
   Future<void> play() async {
-    if (_disposed) return;
-    if (playing) return;
+    if (_disposed || playing) return;
+
     _playInterrupted = false;
     // Broadcast to clients immediately, but revert to false if we fail to
     // activate the audio session. This allows setAudioSource to be aware of a
@@ -1265,6 +1325,13 @@ class AudioPlayer {
           _shuffleModeEnabledSubject
               .add(message.shuffleMode != ShuffleModeMessage.none);
         }
+        if (message.outputError != _outputErrorSubject.nvalue) {
+          _outputErrorSubject.add(message.outputError);
+        }
+
+        if (message.outputAbsolutePath != _outputAbsolutePathSubject.nvalue) {
+          _outputAbsolutePathSubject.add(message.outputAbsolutePath);
+        }
       });
       _playbackEventSubscription =
           platform.playbackEventMessageStream.listen((message) {
@@ -1452,14 +1519,15 @@ class AudioPlayer {
   Future<void> _disposePlatform(AudioPlayerPlatform platform) async {
     if (platform is _IdleAudioPlayer) {
       await platform.dispose(DisposeRequest());
-    } else {
-      _nativePlatform = null;
-      try {
-        await _pluginPlatform.disposePlayer(DisposePlayerRequest(id: _id));
-      } catch (e) {
-        // Fallback if disposePlayer hasn't been implemented.
-        await platform.dispose(DisposeRequest());
-      }
+      return;
+    }
+
+    _nativePlatform = null;
+    try {
+      await _pluginPlatform.disposePlayer(DisposePlayerRequest(id: _id));
+    } catch (e) {
+      // Fallback if disposePlayer hasn't been implemented.
+      await platform.dispose(DisposeRequest());
     }
   }
 
@@ -1813,11 +1881,17 @@ class DarwinLoadControl {
   /// second.
   final double? preferredPeakBitRate;
 
+  /// (iOS/macOS) If set to true, a file in the user's document directory will be written,
+  /// it will contain all the final output reproduced by the player (Final means after all effects
+  /// have been applied to the audio).
+  final bool shouldWriteFinalOutputToFile;
+
   DarwinLoadControl({
     this.automaticallyWaitsToMinimizeStalling = true,
     this.preferredForwardBufferDuration,
     this.canUseNetworkResourcesForLiveStreamingWhilePaused = false,
     this.preferredPeakBitRate,
+    this.shouldWriteFinalOutputToFile = false,
   });
 
   DarwinLoadControlMessage _toMessage() => DarwinLoadControlMessage(
@@ -1827,6 +1901,7 @@ class DarwinLoadControl {
         canUseNetworkResourcesForLiveStreamingWhilePaused:
             canUseNetworkResourcesForLiveStreamingWhilePaused,
         preferredPeakBitRate: preferredPeakBitRate,
+        shouldWriteFinalOutputToFile: shouldWriteFinalOutputToFile,
       );
 }
 
@@ -1997,11 +2072,11 @@ class _ProxyHttpServer {
     _running = true;
     _server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
     _server.listen((request) async {
-      if (request.method == 'GET') {
-        final uriPath = _requestKey(request.uri);
-        final handler = _handlerMap[uriPath]!;
-        handler(this, request);
-      }
+      if (request.method != 'GET') return;
+
+      final uriPath = _requestKey(request.uri);
+      final handler = _handlerMap[uriPath]!;
+      handler(this, request);
     }, onDone: () {
       _running = false;
     }, onError: (Object e, StackTrace st) {
@@ -2088,18 +2163,25 @@ abstract class AudioSource {
   ///
   /// If headers are set, just_audio will create a cleartext local HTTP proxy on
   /// your device to forward HTTP requests with headers included.
-  static UriAudioSource uri(Uri uri,
-      {Map<String, String>? headers, dynamic tag}) {
+  static UriAudioSource uri(
+    Uri uri, {
+    Map<String, String>? headers,
+    dynamic tag,
+    List<AudioEffect>? effects,
+  }) {
     bool hasExtension(Uri uri, String extension) =>
         uri.path.toLowerCase().endsWith('.$extension') ||
         uri.fragment.toLowerCase().endsWith('.$extension');
     if (hasExtension(uri, 'mpd')) {
-      return DashAudioSource(uri, headers: headers, tag: tag);
-    } else if (hasExtension(uri, 'm3u8')) {
-      return HlsAudioSource(uri, headers: headers, tag: tag);
-    } else {
-      return ProgressiveAudioSource(uri, headers: headers, tag: tag);
+      return DashAudioSource(uri, headers: headers, tag: tag, effects: effects);
+    }
+
+    if (hasExtension(uri, 'm3u8')) {
+      return HlsAudioSource(uri, headers: headers, tag: tag, effects: effects);
     }
+
+    return ProgressiveAudioSource(uri,
+        headers: headers, tag: tag, effects: effects);
   }
 
   AudioSource() : _id = _uuid.v4();
@@ -2124,6 +2206,8 @@ abstract class AudioSource {
 
   List<int> get shuffleIndices;
 
+  List<AudioEffect>? get effects;
+
   @override
   int get hashCode => _id.hashCode;
 
@@ -2138,8 +2222,9 @@ abstract class AudioSource {
 abstract class IndexedAudioSource extends AudioSource {
   final dynamic tag;
   Duration? duration;
+  List<AudioEffect>? effects;
 
-  IndexedAudioSource({this.tag, this.duration});
+  IndexedAudioSource({this.tag, this.duration, this.effects});
 
   @override
   void _shuffle({int? initialIndex}) {}
@@ -2157,8 +2242,13 @@ abstract class UriAudioSource extends IndexedAudioSource {
   final Map<String, String>? headers;
   Uri? _overrideUri;
 
-  UriAudioSource(this.uri, {this.headers, dynamic tag, Duration? duration})
-      : super(tag: tag, duration: duration);
+  UriAudioSource(
+    this.uri, {
+    this.headers,
+    List<AudioEffect>? effects,
+    dynamic tag,
+    Duration? duration,
+  }) : super(tag: tag, duration: duration, effects: effects);
 
   /// If [uri] points to an asset, this gives us [_overrideUri] which is the URI
   /// of the copied asset on the filesystem, otherwise it gives us the original
@@ -2176,6 +2266,12 @@ abstract class UriAudioSource extends IndexedAudioSource {
       await player._proxy.ensureRunning();
       _overrideUri = player._proxy.addUriAudioSource(this);
     }
+
+    if (effects != null) {
+      for (final effect in effects!) {
+        effect._setup(player);
+      }
+    }
   }
 
   Future<Uri> _loadAsset(String assetPath) async {
@@ -2203,19 +2299,19 @@ abstract class UriAudioSource extends IndexedAudioSource {
           base64
               .encode((await rootBundle.load(assetPath)).buffer.asUint8List()),
           mimeType);
-    } else {
-      // For non-web platforms, extract the asset into a cache file and pass
-      // that to the player.
-      final file = await _getCacheFile(assetPath);
-      // Not technically inter-isolate-safe, although low risk. Could consider
-      // locking the file or creating a separate lock file.
-      if (!file.existsSync()) {
-        file.createSync(recursive: true);
-        await file.writeAsBytes(
-            (await rootBundle.load(assetPath)).buffer.asUint8List());
-      }
-      return Uri.file(file.path);
     }
+
+    // For non-web platforms, extract the asset into a cache file and pass
+    // that to the player.
+    final file = await _getCacheFile(assetPath);
+    // Not technically inter-isolate-safe, although low risk. Could consider
+    // locking the file or creating a separate lock file.
+    if (!file.existsSync()) {
+      file.createSync(recursive: true);
+      await file.writeAsBytes(
+          (await rootBundle.load(assetPath)).buffer.asUint8List());
+    }
+    return Uri.file(file.path);
   }
 
   /// Get file for caching asset media with proper extension
@@ -2240,13 +2336,24 @@ abstract class UriAudioSource extends IndexedAudioSource {
 /// If headers are set, just_audio will create a cleartext local HTTP proxy on
 /// your device to forward HTTP requests with headers included.
 class ProgressiveAudioSource extends UriAudioSource {
-  ProgressiveAudioSource(Uri uri,
-      {Map<String, String>? headers, dynamic tag, Duration? duration})
-      : super(uri, headers: headers, tag: tag, duration: duration);
+  ProgressiveAudioSource(
+    Uri uri, {
+    Map<String, String>? headers,
+    List<AudioEffect>? effects,
+    dynamic tag,
+    Duration? duration,
+  }) : super(uri,
+            headers: headers, effects: effects, tag: tag, duration: duration);
 
   @override
   AudioSourceMessage _toMessage() => ProgressiveAudioSourceMessage(
-      id: _id, uri: _effectiveUri.toString(), headers: headers, tag: tag);
+        id: _id,
+        uri: _effectiveUri.toString(),
+        headers: headers,
+        tag: tag,
+        effects:
+            effects?.map((audioEffect) => audioEffect._toMessage()).toList(),
+      );
 }
 
 /// An [AudioSource] representing a DASH stream. The following URI schemes are
@@ -2264,13 +2371,24 @@ class ProgressiveAudioSource extends UriAudioSource {
 /// If headers are set, just_audio will create a cleartext local HTTP proxy on
 /// your device to forward HTTP requests with headers included.
 class DashAudioSource extends UriAudioSource {
-  DashAudioSource(Uri uri,
-      {Map<String, String>? headers, dynamic tag, Duration? duration})
-      : super(uri, headers: headers, tag: tag, duration: duration);
+  DashAudioSource(
+    Uri uri, {
+    Map<String, String>? headers,
+    List<AudioEffect>? effects,
+    dynamic tag,
+    Duration? duration,
+  }) : super(uri,
+            headers: headers, effects: effects, tag: tag, duration: duration);
 
   @override
   AudioSourceMessage _toMessage() => DashAudioSourceMessage(
-      id: _id, uri: _effectiveUri.toString(), headers: headers, tag: tag);
+        id: _id,
+        uri: _effectiveUri.toString(),
+        headers: headers,
+        tag: tag,
+        effects:
+            effects?.map((audioEffect) => audioEffect._toMessage()).toList(),
+      );
 }
 
 /// An [AudioSource] representing an HLS stream. The following URI schemes are
@@ -2287,13 +2405,24 @@ class DashAudioSource extends UriAudioSource {
 /// If headers are set, just_audio will create a cleartext local HTTP proxy on
 /// your device to forward HTTP requests with headers included.
 class HlsAudioSource extends UriAudioSource {
-  HlsAudioSource(Uri uri,
-      {Map<String, String>? headers, dynamic tag, Duration? duration})
-      : super(uri, headers: headers, tag: tag, duration: duration);
+  HlsAudioSource(
+    Uri uri, {
+    Map<String, String>? headers,
+    List<AudioEffect>? effects,
+    dynamic tag,
+    Duration? duration,
+  }) : super(uri,
+            headers: headers, effects: effects, tag: tag, duration: duration);
 
   @override
   AudioSourceMessage _toMessage() => HlsAudioSourceMessage(
-      id: _id, uri: _effectiveUri.toString(), headers: headers, tag: tag);
+        id: _id,
+        uri: _effectiveUri.toString(),
+        headers: headers,
+        tag: tag,
+        effects:
+            effects?.map((audioEffect) => audioEffect._toMessage()).toList(),
+      );
 }
 
 /// An [AudioSource] for a period of silence.
@@ -2376,16 +2505,15 @@ class ConcatenatingAudioSource extends AudioSource {
     final index = children.length;
     children.add(audioSource);
     _shuffleOrder.insert(index, 1);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      await audioSource._setup(_player!);
-      await (await _player!._platform).concatenatingInsertAll(
-          ConcatenatingInsertAllRequest(
-              id: _id,
-              index: index,
-              children: [audioSource._toMessage()],
-              shuffleOrder: List.of(_shuffleOrder.indices)));
-    }
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    await audioSource._setup(_player!);
+    await (await _player!._platform).concatenatingInsertAll(
+        ConcatenatingInsertAllRequest(
+            id: _id,
+            index: index,
+            children: [audioSource._toMessage()],
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Inserts an [AudioSource] at [index].
@@ -2409,36 +2537,35 @@ class ConcatenatingAudioSource extends AudioSource {
     final index = this.children.length;
     this.children.addAll(children);
     _shuffleOrder.insert(index, children.length);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      for (var child in children) {
-        await child._setup(_player!);
-      }
-      await (await _player!._platform).concatenatingInsertAll(
-          ConcatenatingInsertAllRequest(
-              id: _id,
-              index: index,
-              children: children.map((child) => child._toMessage()).toList(),
-              shuffleOrder: List.of(_shuffleOrder.indices)));
+    if (_player == null) return;
+
+    _player!._broadcastSequence();
+    for (var child in children) {
+      await child._setup(_player!);
     }
+    await (await _player!._platform).concatenatingInsertAll(
+        ConcatenatingInsertAllRequest(
+            id: _id,
+            index: index,
+            children: children.map((child) => child._toMessage()).toList(),
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Insert multiple [AudioSource]s at [index].
   Future<void> insertAll(int index, List<AudioSource> children) async {
     this.children.insertAll(index, children);
     _shuffleOrder.insert(index, children.length);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      for (var child in children) {
-        await child._setup(_player!);
-      }
-      await (await _player!._platform).concatenatingInsertAll(
-          ConcatenatingInsertAllRequest(
-              id: _id,
-              index: index,
-              children: children.map((child) => child._toMessage()).toList(),
-              shuffleOrder: List.of(_shuffleOrder.indices)));
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    for (var child in children) {
+      await child._setup(_player!);
     }
+    await (await _player!._platform).concatenatingInsertAll(
+        ConcatenatingInsertAllRequest(
+            id: _id,
+            index: index,
+            children: children.map((child) => child._toMessage()).toList(),
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Dynamically remove an [AudioSource] at [index] after this
@@ -2446,15 +2573,14 @@ class ConcatenatingAudioSource extends AudioSource {
   Future<void> removeAt(int index) async {
     children.removeAt(index);
     _shuffleOrder.removeRange(index, index + 1);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      await (await _player!._platform).concatenatingRemoveRange(
-          ConcatenatingRemoveRangeRequest(
-              id: _id,
-              startIndex: index,
-              endIndex: index + 1,
-              shuffleOrder: List.of(_shuffleOrder.indices)));
-    }
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    await (await _player!._platform).concatenatingRemoveRange(
+        ConcatenatingRemoveRangeRequest(
+            id: _id,
+            startIndex: index,
+            endIndex: index + 1,
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Removes a range of [AudioSource]s from index [start] inclusive
@@ -2462,15 +2588,14 @@ class ConcatenatingAudioSource extends AudioSource {
   Future<void> removeRange(int start, int end) async {
     children.removeRange(start, end);
     _shuffleOrder.removeRange(start, end);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      await (await _player!._platform).concatenatingRemoveRange(
-          ConcatenatingRemoveRangeRequest(
-              id: _id,
-              startIndex: start,
-              endIndex: end,
-              shuffleOrder: List.of(_shuffleOrder.indices)));
-    }
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    await (await _player!._platform).concatenatingRemoveRange(
+        ConcatenatingRemoveRangeRequest(
+            id: _id,
+            startIndex: start,
+            endIndex: end,
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Moves an [AudioSource] from [currentIndex] to [newIndex].
@@ -2478,30 +2603,27 @@ class ConcatenatingAudioSource extends AudioSource {
     children.insert(newIndex, children.removeAt(currentIndex));
     _shuffleOrder.removeRange(currentIndex, currentIndex + 1);
     _shuffleOrder.insert(newIndex, 1);
-    if (_player != null) {
-      _player!._broadcastSequence();
-      await (await _player!._platform).concatenatingMove(
-          ConcatenatingMoveRequest(
-              id: _id,
-              currentIndex: currentIndex,
-              newIndex: newIndex,
-              shuffleOrder: List.of(_shuffleOrder.indices)));
-    }
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    await (await _player!._platform).concatenatingMove(ConcatenatingMoveRequest(
+        id: _id,
+        currentIndex: currentIndex,
+        newIndex: newIndex,
+        shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// (Untested) Removes all [AudioSource]s.
   Future<void> clear() async {
     children.clear();
     _shuffleOrder.clear();
-    if (_player != null) {
-      _player!._broadcastSequence();
-      await (await _player!._platform).concatenatingRemoveRange(
-          ConcatenatingRemoveRangeRequest(
-              id: _id,
-              startIndex: 0,
-              endIndex: children.length,
-              shuffleOrder: List.of(_shuffleOrder.indices)));
-    }
+    if (_player == null) return;
+    _player!._broadcastSequence();
+    await (await _player!._platform).concatenatingRemoveRange(
+        ConcatenatingRemoveRangeRequest(
+            id: _id,
+            startIndex: 0,
+            endIndex: children.length,
+            shuffleOrder: List.of(_shuffleOrder.indices)));
   }
 
   /// The number of [AudioSource]s.
@@ -2531,10 +2653,15 @@ class ConcatenatingAudioSource extends AudioSource {
 
   @override
   AudioSourceMessage _toMessage() => ConcatenatingAudioSourceMessage(
-      id: _id,
-      children: children.map((child) => child._toMessage()).toList(),
-      useLazyPreparation: useLazyPreparation,
-      shuffleOrder: _shuffleOrder.indices);
+        id: _id,
+        children: children.map((child) => child._toMessage()).toList(),
+        useLazyPreparation: useLazyPreparation,
+        shuffleOrder: _shuffleOrder.indices,
+      );
+
+  @override
+  List<AudioEffect>? get effects =>
+      children.expand((element) => element.effects ?? <AudioEffect>[]).toList();
 }
 
 /// An [AudioSource] that clips the audio of a [UriAudioSource] between a
@@ -2552,8 +2679,9 @@ class ClippingAudioSource extends IndexedAudioSource {
     this.start,
     this.end,
     dynamic tag,
+    List<AudioEffect>? effects,
     Duration? duration,
-  }) : super(tag: tag, duration: duration);
+  }) : super(tag: tag, duration: duration, effects: effects);
 
   @override
   Future<void> _setup(AudioPlayer player) async {
@@ -2563,11 +2691,14 @@ class ClippingAudioSource extends IndexedAudioSource {
 
   @override
   AudioSourceMessage _toMessage() => ClippingAudioSourceMessage(
-      id: _id,
-      child: child._toMessage() as UriAudioSourceMessage,
-      start: start,
-      end: end,
-      tag: tag);
+        id: _id,
+        child: child._toMessage() as UriAudioSourceMessage,
+        start: start,
+        end: end,
+        tag: tag,
+        effects:
+            effects?.map((audioEffect) => audioEffect._toMessage()).toList(),
+      );
 }
 
 // An [AudioSource] that loops a nested [AudioSource] a finite number of times.
@@ -2576,11 +2707,13 @@ class ClippingAudioSource extends IndexedAudioSource {
 class LoopingAudioSource extends AudioSource {
   AudioSource child;
   final int count;
+  final List<AudioEffect>? effects;
 
   LoopingAudioSource({
     required this.child,
     required this.count,
-  }) : super();
+    this.effects,
+  });
 
   @override
   Future<void> _setup(AudioPlayer player) async {
@@ -2600,7 +2733,12 @@ class LoopingAudioSource extends AudioSource {
 
   @override
   AudioSourceMessage _toMessage() => LoopingAudioSourceMessage(
-      id: _id, child: child._toMessage(), count: count);
+        id: _id,
+        child: child._toMessage(),
+        count: count,
+        effects:
+            effects?.map((audioEffect) => audioEffect._toMessage()).toList(),
+      );
 }
 
 Uri _encodeDataUrl(String base64Data, String mimeType) =>
@@ -2611,6 +2749,7 @@ Uri _encodeDataUrl(String base64Data, String mimeType) =>
 @experimental
 abstract class StreamAudioSource extends IndexedAudioSource {
   Uri? _uri;
+
   StreamAudioSource({dynamic tag}) : super(tag: tag);
 
   @override
@@ -2635,7 +2774,12 @@ abstract class StreamAudioSource extends IndexedAudioSource {
 
   @override
   AudioSourceMessage _toMessage() => ProgressiveAudioSourceMessage(
-      id: _id, uri: _uri.toString(), headers: null, tag: tag);
+      id: _id,
+      uri: _uri.toString(),
+      headers: null,
+      tag: tag,
+      effects:
+          effects?.map((audioEffect) => audioEffect._toMessage()).toList());
 }
 
 /// The response for a [StreamAudioSource]. This API is experimental.
@@ -2724,13 +2868,11 @@ class LockCachingAudioSource extends StreamAudioSource {
     }
     _response = null;
     final cacheFile = await this.cacheFile;
-    if (await cacheFile.exists()) {
-      await cacheFile.delete();
-    }
+    if (await cacheFile.exists()) await cacheFile.delete();
+
     final mimeFile = await _mimeFile;
-    if (await mimeFile.exists()) {
-      await mimeFile.delete();
-    }
+    if (await mimeFile.exists()) await mimeFile.delete();
+
     _progress = 0;
     _downloadProgressSubject.add(0.0);
   }
@@ -2756,9 +2898,8 @@ class LockCachingAudioSource extends StreamAudioSource {
     final file = await _mimeFile;
     if (file.existsSync()) {
       return (await _mimeFile).readAsString();
-    } else {
-      return 'audio/mpeg';
     }
+    return 'audio/mpeg';
   }
 
   /// Start downloading the whole audio file to the cache and fulfill byte-range
@@ -3013,6 +3154,7 @@ class _InProgressCacheResponse {
   // ignore: close_sinks
   final controller = ReplaySubject<List<int>>();
   final int? end;
+
   _InProgressCacheResponse({
     required this.end,
   });
@@ -3036,17 +3178,13 @@ class _StreamingByteRangeRequest {
 
   /// Completes this request with the given [response].
   void complete(StreamAudioResponse response) {
-    if (_completer.isCompleted) {
-      return;
-    }
+    if (_completer.isCompleted) return;
     _completer.complete(response);
   }
 
   /// Fails this request with the given [error] and [stackTrace].
   void fail(dynamic error, [StackTrace? stackTrace]) {
-    if (_completer.isCompleted) {
-      return;
-    }
+    if (_completer.isCompleted) return;
     _completer.completeError(error as Object, stackTrace);
   }
 }
@@ -3488,6 +3626,13 @@ class _IdleAudioPlayer extends AudioPlayerPlatform {
           AndroidLoudnessEnhancerSetTargetGainRequest request) async {
     return AndroidLoudnessEnhancerSetTargetGainResponse();
   }
+
+  @override
+  Future<DarwinEqualizerBandSetGainResponse> darwinEqualizerBandSetGain(
+      DarwinEqualizerBandSetGainRequest request) {
+    throw UnimplementedError(
+        "darwinEqualizerBandSetGain() has not been implemented.");
+  }
 }
 
 /// Holds the initial requested position and index for a newly loaded audio
@@ -3513,8 +3658,10 @@ class AudioPipeline {
         androidAudioEffects = androidAudioEffects ?? const [],
         darwinAudioEffects = darwinAudioEffects ?? const [];
 
-  List<AudioEffect> get _audioEffects =>
-      <AudioEffect>[...androidAudioEffects, ...darwinAudioEffects];
+  List<AudioEffect> get _audioEffects => <AudioEffect>[
+        if (_isAndroid()) ...androidAudioEffects,
+        if (_isDarwin()) ...darwinAudioEffects
+      ];
 
   void _setup(AudioPlayer player) {
     for (var effect in _audioEffects) {
@@ -3531,6 +3678,7 @@ class AudioPipeline {
 /// effect, in addition to being part of an [AudioPipeline] attached to an
 /// [AudioPlayer] you must also enable the effect via [setEnabled].
 abstract class AudioEffect {
+  final String id = const Uuid().v4();
   AudioPlayer? _player;
   final _enabledSubject = BehaviorSubject.seeded(false);
 
@@ -3563,7 +3711,7 @@ abstract class AudioEffect {
     _enabledSubject.add(enabled);
     if (_active) {
       await (await _player!._platform).audioEffectSetEnabled(
-          AudioEffectSetEnabledRequest(type: _type, enabled: enabled));
+          AudioEffectSetEnabledRequest(id: id, type: _type, enabled: enabled));
     }
   }
 
@@ -3576,6 +3724,243 @@ mixin AndroidAudioEffect on AudioEffect {}
 /// An [AudioEffect] that supports iOS and macOS.
 mixin DarwinAudioEffect on AudioEffect {}
 
+/// A Darwin [AudioEffect] that delays the audio signal
+class DarwinDelay extends AudioEffect with DarwinAudioEffect {
+  final _secondsDelayTimeSubject = BehaviorSubject.seeded(1.0);
+  final _feedbackPercentSubject = BehaviorSubject.seeded(50.0);
+  final _lowPassCutoffHzSubject = BehaviorSubject.seeded(15000.0);
+  final _wetDryMixPercentSubject = BehaviorSubject.seeded(100.0);
+
+  /// Time taken by the delayed input signal to reach the output
+  /// Range: 0 -> 2
+  /// Default: 1
+  /// Unit: seconds
+  double get secondsDelayTime => _secondsDelayTimeSubject.nvalue!;
+
+  Stream<double> get secondsDelayTimeStream => _secondsDelayTimeSubject.stream;
+
+  /// Amount of the output signal fed back into the delay line
+  /// Range:  -100 -> 100
+  /// Default: 50
+  double get feedbackPercent => _feedbackPercentSubject.nvalue!;
+
+  Stream<double> get feedbackPercentStream => _feedbackPercentSubject.stream;
+
+  /// Cutoff frequency above which high frequency content is rolled off
+  /// Range: 10 -> (samplerate/2)
+  /// Default: 15000
+  double get lowPassCutoffHz => _lowPassCutoffHzSubject.nvalue!;
+
+  Stream<double> get lowPassCutoffHzStream => _lowPassCutoffHzSubject.stream;
+
+  /// Blend of the wet and dry signals
+  /// Range:  0 (all dry) -> 100 (all wet)
+  /// Default: 100
+  double get wetDryMixPercent => _wetDryMixPercentSubject.nvalue!;
+
+  Stream<double> get wetDryMixStream => _wetDryMixPercentSubject.stream;
+
+  DarwinDelay({
+    bool? enabled,
+    double? delayTime,
+    double? feedbackPercent,
+    double? lowPassCutoffHz,
+    double? wetDryMixPercent,
+  }) {
+    if (enabled != null) _enabledSubject.add(enabled);
+
+    if (delayTime != null) _secondsDelayTimeSubject.add(delayTime);
+
+    if (feedbackPercent != null) _feedbackPercentSubject.add(feedbackPercent);
+
+    if (lowPassCutoffHz != null) _lowPassCutoffHzSubject.add(lowPassCutoffHz);
+
+    if (wetDryMixPercent != null)
+      _wetDryMixPercentSubject.add(wetDryMixPercent);
+  }
+
+  @override
+  String get _type => 'DarwinDelay';
+
+  Future<void> setDelayTime(double targetDelayTime) async {
+    _secondsDelayTimeSubject.add(targetDelayTime);
+    if (_active) {
+      await (await _player!._platform).darwinDelaySetTargetDelayTime(
+          DarwinDelaySetDelayTimeRequest(
+              id: id, targetDelayTime: targetDelayTime));
+    }
+  }
+
+  Future<void> setFeedbackPercent(double feedback) async {
+    _feedbackPercentSubject.add(feedback);
+    if (_active) {
+      await (await _player!._platform).darwinDelaySetTargetFeedback(
+          DarwinDelaySetFeedbackRequest(id: id, feedback: feedback));
+    }
+  }
+
+  Future<void> setLowPassCutoffHz(double lowPassCutoff) async {
+    _lowPassCutoffHzSubject.add(lowPassCutoff);
+    if (_active) {
+      await (await _player!._platform).darwinDelaySetLowPassCutoff(
+          DarwinDelaySetLowPassCutoffRequest(
+              id: id, lowPassCutoff: lowPassCutoff));
+    }
+  }
+
+  Future<void> setWetDryMixPercent(double wetDryMix) async {
+    _wetDryMixPercentSubject.add(wetDryMix);
+    if (_active) {
+      await (await _player!._platform).darwinDelaySetWetDryMix(
+          DarwinDelaySetWetDryMixRequest(id: id, wetDryMix: wetDryMix));
+    }
+  }
+
+  @override
+  AudioEffectMessage _toMessage() => DarwinDelayMessage(
+        id: id,
+        enabled: enabled,
+        delayTime: secondsDelayTime,
+        feedback: feedbackPercent,
+        lowPassCutoff: lowPassCutoffHz,
+        wetDryMix: wetDryMixPercent,
+      );
+}
+
+/// A Darwin [AudioEffect] that delays the audio signal
+class DarwinDistortion extends AudioEffect with DarwinAudioEffect {
+  final _presetSubject =
+      BehaviorSubject.seeded(DarwinDistortionPreset.drumsBitBrush);
+  final _wetDryMixSubject = BehaviorSubject.seeded(0.0);
+  final _preGainSubject = BehaviorSubject.seeded(0.0);
+
+  double get wetDryMix => _wetDryMixSubject.nvalue!;
+
+  double get preGain => _preGainSubject.nvalue!;
+
+  DarwinDistortionPreset get preset => _presetSubject.nvalue!;
+
+  Stream<double> get wetDryMixStream => _wetDryMixSubject.stream;
+
+  Stream<double> get preGainMixStream => _preGainSubject.stream;
+
+  Stream<DarwinDistortionPreset> get presetStream => _presetSubject.stream;
+
+  DarwinDistortion({
+    bool? enabled,
+    DarwinDistortionPreset? preset,
+    double? wetDryMix,
+    double? preGain,
+  }) {
+    if (enabled != null) _enabledSubject.add(enabled);
+
+    if (preset != null) _presetSubject.add(preset);
+
+    if (wetDryMix != null) _wetDryMixSubject.add(wetDryMix);
+
+    if (preGain != null) _preGainSubject.add(preGain);
+  }
+
+  @override
+  String get _type => 'DarwinDistortion';
+
+  Future<void> setPreset(DarwinDistortionPreset preset) async {
+    _presetSubject.add(preset);
+    if (_active) {
+      await (await _player!._platform).darwinDistortionSetPreset(
+          DarwinDistortionSetPresetRequest(id: id, preset: preset));
+    }
+  }
+
+  Future<void> setWetDryMix(double wetDryMix) async {
+    _wetDryMixSubject.add(wetDryMix);
+    if (_active) {
+      await (await _player!._platform).darwinDistortionSetWetDryMix(
+          DarwinDistortionSetWetDryMixRequest(id: id, wetDryMix: wetDryMix));
+    }
+  }
+
+  Future<void> setPreGain(double preGain) async {
+    _preGainSubject.add(preGain);
+    if (_active) {
+      await (await _player!._platform).darwinDistortionSetPreGain(
+          DarwinDistortionSetPreGainRequest(id: id, preGain: preGain));
+    }
+  }
+
+  @override
+  AudioEffectMessage _toMessage() => DarwinDistortionMessage(
+        id: id,
+        enabled: enabled,
+        wetDryMix: wetDryMix,
+        preset: preset,
+        preGain: preGain,
+      );
+}
+
+/// A Darwin [AudioEffect] that delays the audio signal
+class DarwinReverb extends AudioEffect with DarwinAudioEffect {
+  final _presetSubject = BehaviorSubject.seeded(DarwinReverbPreset.mediumHall);
+  final _wetDryMixSubject = BehaviorSubject.seeded(0.0);
+
+  double get wetDryMix => _wetDryMixSubject.nvalue!;
+
+  DarwinReverbPreset get preset => _presetSubject.nvalue!;
+
+  Stream<double> get wetDryMixStream => _wetDryMixSubject.stream;
+
+  Stream<DarwinReverbPreset> get presetStream => _presetSubject.stream;
+
+  DarwinReverb({
+    bool? enabled,
+    DarwinReverbPreset? preset,
+    double? wetDryMix,
+  }) {
+    if (enabled != null) _enabledSubject.add(enabled);
+
+    if (preset != null) _presetSubject.add(preset);
+
+    if (wetDryMix != null) _wetDryMixSubject.add(wetDryMix);
+  }
+
+  @override
+  String get _type => 'DarwinReverb';
+
+  Future<void> setPreset(DarwinReverbPreset preset) async {
+    _presetSubject.add(preset);
+    if (_active) {
+      await (await _player!._platform)
+          .darwinReverbSetPreset(DarwinReverbSetPresetRequest(
+        id: id,
+        preset: preset,
+      ));
+    }
+  }
+
+  Future<void> setWetDryMix(double wetDryMix) async {
+    _wetDryMixSubject.add(wetDryMix);
+    if (_active) {
+      await (await _player!._platform)
+          .darwinReverbSetWetDryMix(DarwinReverbSetWetDryMixRequest(
+        id: id,
+        wetDryMix: wetDryMix,
+      ));
+    }
+  }
+
+  @override
+  AudioEffectMessage _toMessage() => DarwinReverbMessage(
+        id: id,
+        enabled: enabled,
+        wetDryMix: wetDryMix,
+        preset: preset,
+      );
+}
+
+/// A Darwin [AudioEffect] that distortion
+
+/// A Darwin [AudioEffect] that reverb
+
 /// An Android [AudioEffect] that boosts the volume of the audio signal to a
 /// target gain, which defaults to zero.
 class AndroidLoudnessEnhancer extends AudioEffect with AndroidAudioEffect {
@@ -3667,8 +4052,59 @@ class AndroidEqualizerBand {
       );
 }
 
-/// The parameter values of an [AndroidEqualizer].
-class AndroidEqualizerParameters {
+/// A frequency band within an [AndroidEqualizer].
+class DarwinEqualizerBand {
+  final AudioPlayer _player;
+
+  /// A zero-based index of the position of this band within its [AndroidEqualizer].
+  final int index;
+
+  /// The center frequency of this band in hertz.
+  final double centerFrequency;
+  final _gainSubject = BehaviorSubject<double>();
+
+  DarwinEqualizerBand._({
+    required AudioPlayer player,
+    required this.index,
+    required this.centerFrequency,
+    required double gain,
+  }) : _player = player {
+    _gainSubject.add(gain);
+  }
+
+  /// The gain for this band in decibels.
+  double get gain => _gainSubject.nvalue!;
+
+  /// A stream of the current gain for this band in decibels.
+  Stream<double> get gainStream => _gainSubject.stream;
+
+  /// Sets the gain for this band in decibels.
+  Future<void> setGain(double gain) async {
+    _gainSubject.add(gain);
+    if (_player._active) {
+      await (await _player._platform).darwinEqualizerBandSetGain(
+          DarwinEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+    }
+  }
+
+  /// Restores the gain after reactivating.
+  Future<void> _restore() async {
+    await (await _player._platform).darwinEqualizerBandSetGain(
+        DarwinEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+  }
+
+  static DarwinEqualizerBand _fromMessage(
+          AudioPlayer player, DarwinEqualizerBandMessage message) =>
+      DarwinEqualizerBand._(
+        player: player,
+        index: message.index,
+        centerFrequency: message.centerFrequency,
+        gain: message.gain,
+      );
+}
+
+/// The parameter values of an [DarwinEqualizer].
+class DarwinEqualizerParameters {
   /// The minimum gain value supported by the equalizer.
   final double minDecibels;
 
@@ -3676,9 +4112,9 @@ class AndroidEqualizerParameters {
   final double maxDecibels;
 
   /// The frequency bands of the equalizer.
-  final List<AndroidEqualizerBand> bands;
+  final List<DarwinEqualizerBand> bands;
 
-  AndroidEqualizerParameters({
+  DarwinEqualizerParameters({
     required this.minDecibels,
     required this.maxDecibels,
     required this.bands,
@@ -3691,56 +4127,209 @@ class AndroidEqualizerParameters {
     }
   }
 
-  static AndroidEqualizerParameters _fromMessage(
-          AudioPlayer player, AndroidEqualizerParametersMessage message) =>
-      AndroidEqualizerParameters(
+  static DarwinEqualizerParameters _fromMessage(
+          AudioPlayer player, DarwinEqualizerParametersMessage message) =>
+      DarwinEqualizerParameters(
         minDecibels: message.minDecibels,
         maxDecibels: message.maxDecibels,
         bands: message.bands
             .map((bandMessage) =>
-                AndroidEqualizerBand._fromMessage(player, bandMessage))
+                DarwinEqualizerBand._fromMessage(player, bandMessage))
             .toList(),
       );
 }
 
-/// An [AudioEffect] for Android that can adjust the gain for different
+/// An [AudioEffect] for Both Android And IOS that can adjust the gain for different
 /// frequency bands of an [AudioPlayer]'s audio signal.
-class AndroidEqualizer extends AudioEffect with AndroidAudioEffect {
-  AndroidEqualizerParameters? _parameters;
-  final Completer<AndroidEqualizerParameters> _parametersCompleter =
-      Completer<AndroidEqualizerParameters>();
+class Equalizer extends AudioEffect with DarwinAudioEffect, AndroidAudioEffect {
+  EqualizerParameters? _parameters;
+  final DarwinEqualizerParametersMessage _darwinMessageParameters;
+  final Completer<EqualizerParameters> _parametersCompleter =
+      Completer<EqualizerParameters>();
+
+  Equalizer({required DarwinEqualizerParametersMessage darwinMessageParameters})
+      : _darwinMessageParameters = darwinMessageParameters;
 
   @override
-  String get _type => 'AndroidEqualizer';
+  String get _type => _isAndroid() ? 'AndroidEqualizer' : 'DarwinEqualizer';
 
   @override
   Future<void> _activate() async {
     await super._activate();
-    if (_parametersCompleter.isCompleted) {
-      await (await parameters)._restore();
+    if (_isAndroid()) {
+      if (_parametersCompleter.isCompleted) {
+        await (await parameters)._restore();
+        return;
+      }
+      final response = await (await _player!._platform)
+          .androidEqualizerGetParameters(
+              AndroidEqualizerGetParametersRequest());
+      _parameters = EqualizerParameters._fromAndroidMessage(
+          _player!, response.parameters);
+      _parametersCompleter.complete(_parameters);
       return;
     }
-    final response = await (await _player!._platform)
-        .androidEqualizerGetParameters(AndroidEqualizerGetParametersRequest());
-    _parameters =
-        AndroidEqualizerParameters._fromMessage(_player!, response.parameters);
-    _parametersCompleter.complete(_parameters);
+
+    if (_isDarwin()) {
+      if (_parametersCompleter.isCompleted) {
+        await (await parameters)._restore();
+        return;
+      }
+      _parameters = EqualizerParameters._fromDarwinMessage(
+          _player!, _darwinMessageParameters);
+      _parametersCompleter.complete(_parameters);
+
+      return;
+    }
+
+    throw Exception("not implemented");
   }
 
   /// The parameter values of this equalizer.
-  Future<AndroidEqualizerParameters> get parameters =>
-      _parametersCompleter.future;
+  Future<EqualizerParameters> get parameters => _parametersCompleter.future;
 
   @override
-  AudioEffectMessage _toMessage() => AndroidEqualizerMessage(
+  AudioEffectMessage _toMessage() {
+    if (_isAndroid()) {
+      return AndroidEqualizerMessage(
         enabled: enabled,
         // Parameters are only communicated from the platform.
         parameters: null,
       );
+    }
+
+    if (_isDarwin()) {
+      return DarwinEqualizerMessage(
+        enabled: enabled,
+        parameters: _darwinMessageParameters,
+      );
+    }
+
+    throw Exception("not implemented");
+  }
+}
+
+/// The parameter values of an [AndroidEqualizer].
+class EqualizerParameters {
+  /// The minimum gain value supported by the equalizer.
+  final double minDecibels;
+
+  /// The maximum gain value supported by the equalizer.
+  final double maxDecibels;
+
+  /// The frequency bands of the equalizer.
+  final List<EqualizerBand> bands;
+
+  EqualizerParameters({
+    required this.minDecibels,
+    required this.maxDecibels,
+    required this.bands,
+  });
+
+  /// Restore platform state after reactivating.
+  Future<void> _restore() async {
+    for (var band in bands) {
+      await band._restore();
+    }
+  }
+
+  static EqualizerParameters _fromAndroidMessage(
+          AudioPlayer player, AndroidEqualizerParametersMessage message) =>
+      EqualizerParameters(
+        minDecibels: message.minDecibels,
+        maxDecibels: message.maxDecibels,
+        bands: message.bands
+            .map((bandMessage) =>
+                EqualizerBand._fromAndroidMessage(player, bandMessage))
+            .toList(),
+      );
+
+  static EqualizerParameters _fromDarwinMessage(
+          AudioPlayer player, DarwinEqualizerParametersMessage message) =>
+      EqualizerParameters(
+        minDecibels: message.minDecibels,
+        maxDecibels: message.maxDecibels,
+        bands: message.bands
+            .map((bandMessage) =>
+                EqualizerBand._fromDarwinMessage(player, bandMessage))
+            .toList(),
+      );
+}
+
+/// A frequency band within an [AndroidEqualizer].
+class EqualizerBand {
+  final AudioPlayer _player;
+
+  /// A zero-based index of the position of this band within its [AndroidEqualizer].
+  final int index;
+
+  /// The center frequency of this band in hertz.
+  final double centerFrequency;
+  final _gainSubject = BehaviorSubject<double>();
+
+  EqualizerBand._({
+    required AudioPlayer player,
+    required this.index,
+    required this.centerFrequency,
+    required double gain,
+  }) : _player = player {
+    _gainSubject.add(gain);
+  }
+
+  /// The gain for this band in decibels.
+  double get gain => _gainSubject.nvalue!;
+
+  /// A stream of the current gain for this band in decibels.
+  Stream<double> get gainStream => _gainSubject.stream;
+
+  /// Sets the gain for this band in decibels.
+  Future<void> setGain(double gain) async {
+    _gainSubject.add(gain);
+    if (_player._active) {
+      if (_isAndroid()) {
+        await (await _player._platform).androidEqualizerBandSetGain(
+            AndroidEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+      } else if (_isDarwin()) {
+        await (await _player._platform).darwinEqualizerBandSetGain(
+            DarwinEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+      }
+    }
+  }
+
+  /// Restores the gain after reactivating.
+  Future<void> _restore() async {
+    if (_isAndroid()) {
+      await (await _player._platform).androidEqualizerBandSetGain(
+          AndroidEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+    } else if (_isDarwin()) {
+      await (await _player._platform).darwinEqualizerBandSetGain(
+          DarwinEqualizerBandSetGainRequest(bandIndex: index, gain: gain));
+    }
+  }
+
+  static EqualizerBand _fromAndroidMessage(
+          AudioPlayer player, AndroidEqualizerBandMessage message) =>
+      EqualizerBand._(
+        player: player,
+        index: message.index,
+        centerFrequency: message.centerFrequency,
+        gain: message.gain,
+      );
+
+  static EqualizerBand _fromDarwinMessage(
+          AudioPlayer player, DarwinEqualizerBandMessage message) =>
+      EqualizerBand._(
+        player: player,
+        index: message.index,
+        centerFrequency: message.centerFrequency,
+        gain: message.gain,
+      );
 }
 
 bool _isAndroid() => !kIsWeb && Platform.isAndroid;
+
 bool _isDarwin() => !kIsWeb && (Platform.isIOS || Platform.isMacOS);
+
 bool _isUnitTest() => !kIsWeb && Platform.environment['FLUTTER_TEST'] == 'true';
 
 /// Backwards compatible extensions on rxdart's ValueStream
diff --git a/just_audio/macos/.gitignore b/just_audio/macos/.gitignore
deleted file mode 100644
index aa479fd3c..000000000
--- a/just_audio/macos/.gitignore
+++ /dev/null
@@ -1,37 +0,0 @@
-.idea/
-.vagrant/
-.sconsign.dblite
-.svn/
-
-.DS_Store
-*.swp
-profile
-
-DerivedData/
-build/
-GeneratedPluginRegistrant.h
-GeneratedPluginRegistrant.m
-
-.generated/
-
-*.pbxuser
-*.mode1v3
-*.mode2v3
-*.perspectivev3
-
-!default.pbxuser
-!default.mode1v3
-!default.mode2v3
-!default.perspectivev3
-
-xcuserdata
-
-*.moved-aside
-
-*.pyc
-*sync/
-Icon?
-.tags*
-
-/Flutter/Generated.xcconfig
-/Flutter/flutter_export_environment.sh
\ No newline at end of file
diff --git a/just_audio/macos/Assets/.gitkeep b/just_audio/macos/Assets/.gitkeep
deleted file mode 100644
index e69de29bb..000000000
diff --git a/just_audio/macos/Classes/AudioPlayer.h b/just_audio/macos/Classes/AudioPlayer.h
deleted file mode 100644
index eb5da3107..000000000
--- a/just_audio/macos/Classes/AudioPlayer.h
+++ /dev/null
@@ -1,26 +0,0 @@
-#import <FlutterMacOS/FlutterMacOS.h>
-#import <AVFoundation/AVFoundation.h>
-
-@interface AudioPlayer : NSObject<AVPlayerItemMetadataOutputPushDelegate>
-
-@property (readonly, nonatomic) AVQueuePlayer *player;
-@property (readonly, nonatomic) float speed;
-
-- (instancetype)initWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar playerId:(NSString*)idParam loadConfiguration:(NSDictionary *)loadConfiguration;
-- (void)dispose;
-
-@end
-
-enum ProcessingState {
-	none,
-	loading,
-	buffering,
-	ready,
-	completed
-};
-
-enum LoopMode {
-	loopOff,
-	loopOne,
-	loopAll
-};
diff --git a/just_audio/macos/Classes/AudioPlayer.m b/just_audio/macos/Classes/AudioPlayer.m
deleted file mode 120000
index 596ca1d0d..000000000
--- a/just_audio/macos/Classes/AudioPlayer.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/AudioPlayer.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/AudioSource.h b/just_audio/macos/Classes/AudioSource.h
deleted file mode 100644
index d9db8d8e9..000000000
--- a/just_audio/macos/Classes/AudioSource.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface AudioSource : NSObject
-
-@property (readonly, nonatomic) NSString* sourceId;
-
-- (instancetype)initWithId:(NSString *)sid;
-- (int)buildSequence:(NSMutableArray *)sequence treeIndex:(int)treeIndex;
-- (void)findById:(NSString *)sourceId matches:(NSMutableArray<AudioSource *> *)matches;
-- (NSArray<NSNumber *> *)getShuffleIndices;
-- (void)decodeShuffleOrder:(NSDictionary *)dict;
-
-@end
diff --git a/just_audio/macos/Classes/AudioSource.m b/just_audio/macos/Classes/AudioSource.m
deleted file mode 120000
index 16881d6f5..000000000
--- a/just_audio/macos/Classes/AudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/AudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/AudioSource.swift b/just_audio/macos/Classes/AudioSource.swift
new file mode 100644
index 000000000..9966bc42d
--- /dev/null
+++ b/just_audio/macos/Classes/AudioSource.swift
@@ -0,0 +1,36 @@
+import AVFoundation
+
+class AudioSource {
+    let sourceId: String
+
+    init(sid: String) {
+        sourceId = sid
+    }
+
+    func buildSequence() -> [IndexedAudioSource] {
+        return []
+    }
+
+    func getShuffleIndices() -> [Int] {
+        return []
+    }
+
+    static func fromListJson(_ data: [[String: Any]]) throws -> [AudioSource] {
+        return try data.map { item in
+            try AudioSource.fromJson(item)
+        }
+    }
+
+    static func fromJson(_ data: [String: Any]) throws -> AudioSource {
+        let type = data["type"] as! String
+
+        switch type {
+        case "progressive":
+            return UriAudioSource(sid: data["id"] as! String, uri: data["uri"] as! String)
+        case "concatenating":
+            return ConcatenatingAudioSource(sid: data["id"] as! String, audioSources: try AudioSource.fromListJson(data["children"] as! [[String: Any]]), shuffleOrder: data["shuffleOrder"] as! [Int])
+        default:
+            throw NotSupportedError(value: type, "When decoding audio source")
+        }
+    }
+}
diff --git a/just_audio/macos/Classes/BandEqualizerData.swift b/just_audio/macos/Classes/BandEqualizerData.swift
new file mode 100644
index 000000000..4ba538d29
--- /dev/null
+++ b/just_audio/macos/Classes/BandEqualizerData.swift
@@ -0,0 +1,14 @@
+//
+//  BandEqualizerData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct BandEqualizerData: Codable {
+    let index: Int
+    let centerFrequency: Float
+    let gain: Float
+}
diff --git a/just_audio/macos/Classes/BetterEventChannel.h b/just_audio/macos/Classes/BetterEventChannel.h
deleted file mode 100644
index a9b384fd1..000000000
--- a/just_audio/macos/Classes/BetterEventChannel.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface BetterEventChannel : NSObject<FlutterStreamHandler>
-
-- (instancetype)initWithName:(NSString*)name messenger:(NSObject<FlutterBinaryMessenger> *)messenger;
-- (void)sendEvent:(id)event;
-- (void)dispose;
-
-@end
diff --git a/just_audio/macos/Classes/BetterEventChannel.m b/just_audio/macos/Classes/BetterEventChannel.m
deleted file mode 120000
index e43a7141c..000000000
--- a/just_audio/macos/Classes/BetterEventChannel.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/BetterEventChannel.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/BetterEventChannel.swift b/just_audio/macos/Classes/BetterEventChannel.swift
new file mode 100644
index 000000000..67235ac41
--- /dev/null
+++ b/just_audio/macos/Classes/BetterEventChannel.swift
@@ -0,0 +1,30 @@
+import FlutterMacOS
+
+class BetterEventChannel: NSObject, FlutterStreamHandler {
+    let eventChannel: FlutterEventChannel
+    var eventSink: FlutterEventSink?
+
+    init(name: String, messenger: FlutterBinaryMessenger) {
+        eventChannel = FlutterEventChannel(name: name, binaryMessenger: messenger)
+        super.init()
+        eventChannel.setStreamHandler(self)
+    }
+
+    func onListen(withArguments _: Any?, eventSink events: @escaping FlutterEventSink) -> FlutterError? {
+        eventSink = events
+        return nil
+    }
+
+    func onCancel(withArguments _: Any?) -> FlutterError? {
+        eventSink = nil
+        return nil
+    }
+
+    func sendEvent(_ event: Any) {
+        eventSink?(event)
+    }
+
+    func dispose() {
+        eventChannel.setStreamHandler(nil)
+    }
+}
diff --git a/just_audio/macos/Classes/ClippingAudioSource.h b/just_audio/macos/Classes/ClippingAudioSource.h
deleted file mode 100644
index 8122e3a4d..000000000
--- a/just_audio/macos/Classes/ClippingAudioSource.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#import "AudioSource.h"
-#import "UriAudioSource.h"
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface ClippingAudioSource : IndexedAudioSource
-
-@property (readonly, nonatomic) UriAudioSource* audioSource;
-
-- (instancetype)initWithId:(NSString *)sid audioSource:(UriAudioSource *)audioSource start:(NSNumber *)start end:(NSNumber *)end;
-
-@end
diff --git a/just_audio/macos/Classes/ClippingAudioSource.m b/just_audio/macos/Classes/ClippingAudioSource.m
deleted file mode 120000
index d561b1e0e..000000000
--- a/just_audio/macos/Classes/ClippingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/ClippingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/ConcatenatingAudioSource.h b/just_audio/macos/Classes/ConcatenatingAudioSource.h
deleted file mode 100644
index 51bd6084f..000000000
--- a/just_audio/macos/Classes/ConcatenatingAudioSource.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#import "AudioSource.h"
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface ConcatenatingAudioSource : AudioSource
-
-@property (readonly, nonatomic) int count;
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSMutableArray<AudioSource *> *)audioSources shuffleOrder:(NSArray<NSNumber *> *)shuffleOrder;
-- (void)insertSource:(AudioSource *)audioSource atIndex:(int)index;
-- (void)removeSourcesFromIndex:(int)start toIndex:(int)end;
-- (void)moveSourceFromIndex:(int)currentIndex toIndex:(int)newIndex;
-- (void)setShuffleOrder:(NSArray<NSNumber *> *)shuffleOrder;
-
-@end
diff --git a/just_audio/macos/Classes/ConcatenatingAudioSource.m b/just_audio/macos/Classes/ConcatenatingAudioSource.m
deleted file mode 120000
index 1e2adbb70..000000000
--- a/just_audio/macos/Classes/ConcatenatingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/ConcatenatingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/ConcatenatingAudioSource.swift b/just_audio/macos/Classes/ConcatenatingAudioSource.swift
new file mode 100644
index 000000000..dfc533166
--- /dev/null
+++ b/just_audio/macos/Classes/ConcatenatingAudioSource.swift
@@ -0,0 +1,22 @@
+import AVFoundation
+
+class ConcatenatingAudioSource: AudioSource {
+    let audioSources: [AudioSource]
+    let shuffleOrder: [Int]
+
+    init(sid: String, audioSources: [AudioSource], shuffleOrder: [Int]) {
+        self.audioSources = audioSources
+        self.shuffleOrder = shuffleOrder
+        super.init(sid: sid)
+    }
+
+    override func buildSequence() -> [IndexedAudioSource] {
+        return audioSources.flatMap {
+            $0.buildSequence()
+        }
+    }
+
+    override func getShuffleIndices() -> [Int] {
+        return shuffleOrder
+    }
+}
diff --git a/just_audio/macos/Classes/EffectData.swift b/just_audio/macos/Classes/EffectData.swift
new file mode 100644
index 000000000..14c39d554
--- /dev/null
+++ b/just_audio/macos/Classes/EffectData.swift
@@ -0,0 +1,12 @@
+//
+//  EffectData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+protocol EffectData {
+    var type: EffectType { get }
+}
diff --git a/just_audio/macos/Classes/EffectType.swift b/just_audio/macos/Classes/EffectType.swift
new file mode 100644
index 000000000..0b754e493
--- /dev/null
+++ b/just_audio/macos/Classes/EffectType.swift
@@ -0,0 +1,12 @@
+//
+//  EffectType.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum EffectType: String, Codable {
+    case darwinEqualizer = "DarwinEqualizer"
+}
diff --git a/just_audio/macos/Classes/EqualizerEffectData.swift b/just_audio/macos/Classes/EqualizerEffectData.swift
new file mode 100644
index 000000000..0defd7b2c
--- /dev/null
+++ b/just_audio/macos/Classes/EqualizerEffectData.swift
@@ -0,0 +1,18 @@
+//
+//  EqualizerEffectData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct EqualizerEffectData: EffectData, Codable {
+    let type: EffectType
+    let enabled: Bool
+    let parameters: ParamsEqualizerData
+
+    static func fromJson(_ map: [String: Any]) -> EqualizerEffectData {
+        return try! JSONDecoder().decode(EqualizerEffectData.self, from: JSONSerialization.data(withJSONObject: map))
+    }
+}
diff --git a/just_audio/macos/Classes/Errors/NotImplementedError.swift b/just_audio/macos/Classes/Errors/NotImplementedError.swift
new file mode 100644
index 000000000..b3f3f7f10
--- /dev/null
+++ b/just_audio/macos/Classes/Errors/NotImplementedError.swift
@@ -0,0 +1,14 @@
+//
+//  NotImplementedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class NotImplementedError: PluginError {
+    init(_ message: String) {
+        super.init(500, message)
+    }
+}
diff --git a/just_audio/macos/Classes/Errors/NotInitializedError.swift b/just_audio/macos/Classes/Errors/NotInitializedError.swift
new file mode 100644
index 000000000..6c8ffc06e
--- /dev/null
+++ b/just_audio/macos/Classes/Errors/NotInitializedError.swift
@@ -0,0 +1,13 @@
+//
+//  NotInitializedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+class NotInitializedError: PluginError {
+    init(_ message: String) {
+        super.init(403, message)
+    }
+}
diff --git a/just_audio/macos/Classes/Errors/NotSupportedError.swift b/just_audio/macos/Classes/Errors/NotSupportedError.swift
new file mode 100644
index 000000000..17d5f6e9b
--- /dev/null
+++ b/just_audio/macos/Classes/Errors/NotSupportedError.swift
@@ -0,0 +1,16 @@
+//
+//  NotSupportedError.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+class NotSupportedError: PluginError {
+    var value: Any
+
+    init(value: Any, _ message: String) {
+        self.value = value
+        super.init(400, "Not support \(value)\n\(message)")
+    }
+}
diff --git a/just_audio/macos/Classes/Errors/PluginError.swift b/just_audio/macos/Classes/Errors/PluginError.swift
new file mode 100644
index 000000000..59f3fc3f8
--- /dev/null
+++ b/just_audio/macos/Classes/Errors/PluginError.swift
@@ -0,0 +1,18 @@
+//
+//  PluginErrors.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class PluginError: Error {
+    var code: Int
+    var message: String
+
+    init(_ code: Int, _ message: String) {
+        self.code = code
+        self.message = message
+    }
+}
diff --git a/just_audio/macos/Classes/Extensions/AVAudioPlayerNode.swift b/just_audio/macos/Classes/Extensions/AVAudioPlayerNode.swift
new file mode 100644
index 000000000..84c819550
--- /dev/null
+++ b/just_audio/macos/Classes/Extensions/AVAudioPlayerNode.swift
@@ -0,0 +1,19 @@
+//
+//  AVAudioPlayerNode.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+extension AVAudioPlayerNode {
+    var currentTime: CMTime {
+        if let nodeTime: AVAudioTime = lastRenderTime, let playerTime: AVAudioTime = playerTime(forNodeTime: nodeTime) {
+            let currentTime = Double(playerTime.sampleTime) / playerTime.sampleRate
+            let milliSeconds = Int64(currentTime * 1000)
+            return milliSeconds < 0 ? CMTime.zero : CMTime(value: milliSeconds, timescale: 1000)
+        }
+        return CMTime.zero
+    }
+}
diff --git a/just_audio/macos/Classes/Extensions/CMTime.swift b/just_audio/macos/Classes/Extensions/CMTime.swift
new file mode 100644
index 000000000..28ad9f5f1
--- /dev/null
+++ b/just_audio/macos/Classes/Extensions/CMTime.swift
@@ -0,0 +1,17 @@
+//
+//  CMTime.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+extension CMTime {
+    var milliseconds: Int64 {
+        return self == CMTime.invalid ? -1 : Int64(value * 1000 / Int64(timescale))
+    }
+
+    var microseconds: Int64 {
+        return self == CMTime.invalid ? -1 : Int64(value * 1_000_000 / Int64(timescale))
+    }
+}
diff --git a/just_audio/macos/Classes/IndexedAudioSource.h b/just_audio/macos/Classes/IndexedAudioSource.h
deleted file mode 100644
index 9bf755b8e..000000000
--- a/just_audio/macos/Classes/IndexedAudioSource.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#import "AudioSource.h"
-#import "IndexedPlayerItem.h"
-#import <FlutterMacOS/FlutterMacOS.h>
-#import <AVFoundation/AVFoundation.h>
-
-@interface IndexedAudioSource : AudioSource
-
-@property (readonly, nonatomic) IndexedPlayerItem *playerItem;
-@property (readonly, nonatomic) IndexedPlayerItem *playerItem2;
-@property (readwrite, nonatomic) CMTime duration;
-@property (readonly, nonatomic) CMTime position;
-@property (readonly, nonatomic) CMTime bufferedPosition;
-@property (readonly, nonatomic) BOOL isAttached;
-
-- (void)onStatusChanged:(AVPlayerItemStatus)status;
-- (void)attach:(AVQueuePlayer *)player initialPos:(CMTime)initialPos;
-- (void)play:(AVQueuePlayer *)player;
-- (void)pause:(AVQueuePlayer *)player;
-- (void)stop:(AVQueuePlayer *)player;
-- (void)seek:(CMTime)position;
-- (void)seek:(CMTime)position completionHandler:(void (^)(BOOL))completionHandler;
-- (void)preparePlayerItem2;
-- (void)flip;
-- (void)applyPreferredForwardBufferDuration;
-- (void)applyCanUseNetworkResourcesForLiveStreamingWhilePaused;
-- (void)applyPreferredPeakBitRate;
-
-@end
diff --git a/just_audio/macos/Classes/IndexedAudioSource.m b/just_audio/macos/Classes/IndexedAudioSource.m
deleted file mode 120000
index 051d5041c..000000000
--- a/just_audio/macos/Classes/IndexedAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/IndexedAudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/IndexedAudioSource.swift b/just_audio/macos/Classes/IndexedAudioSource.swift
new file mode 100644
index 000000000..d17044cc7
--- /dev/null
+++ b/just_audio/macos/Classes/IndexedAudioSource.swift
@@ -0,0 +1,15 @@
+import AVFoundation
+
+class IndexedAudioSource: AudioSource {
+    func load(engine _: AVAudioEngine, playerNode _: AVAudioPlayerNode, speedControl _: AVAudioUnitVarispeed, position _: CMTime?, completionHandler _: @escaping () -> Void) throws {
+        throw NotImplementedError("Not implemented IndexedAudioSource.load")
+    }
+
+    func getDuration() -> CMTime {
+        return CMTime.invalid
+    }
+
+    override func buildSequence() -> [IndexedAudioSource] {
+        return [self]
+    }
+}
diff --git a/just_audio/macos/Classes/IndexedPlayerItem.h b/just_audio/macos/Classes/IndexedPlayerItem.h
deleted file mode 100644
index 8a86a94d4..000000000
--- a/just_audio/macos/Classes/IndexedPlayerItem.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#import <AVFoundation/AVFoundation.h>
-
-@class IndexedAudioSource;
-
-@interface IndexedPlayerItem : AVPlayerItem
-
-@property (readwrite, nonatomic, weak) IndexedAudioSource *audioSource;
-
-@end
diff --git a/just_audio/macos/Classes/IndexedPlayerItem.m b/just_audio/macos/Classes/IndexedPlayerItem.m
deleted file mode 120000
index 04e55fc54..000000000
--- a/just_audio/macos/Classes/IndexedPlayerItem.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/IndexedPlayerItem.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/JustAudioPlayer.swift b/just_audio/macos/Classes/JustAudioPlayer.swift
new file mode 100644
index 000000000..b076325ad
--- /dev/null
+++ b/just_audio/macos/Classes/JustAudioPlayer.swift
@@ -0,0 +1,144 @@
+import AVFoundation
+
+public class JustAudioPlayer: NSObject {
+    let playerId: String
+    let audioEffects: [[String: Any]]
+
+    let methodChannel: FlutterMethodChannel
+    let eventChannel: BetterEventChannel
+    let dataChannel: BetterEventChannel
+
+    var player: Player!
+
+    init(registrar _: FlutterPluginRegistrar,
+         playerId: String,
+         loadConfiguration _: [String: Any],
+         audioEffects: [[String: Any]],
+         methodChannel: FlutterMethodChannel,
+         eventChannel: BetterEventChannel,
+         dataChannel: BetterEventChannel)
+    {
+        self.playerId = playerId
+        self.audioEffects = audioEffects
+
+        self.methodChannel = methodChannel
+        self.eventChannel = eventChannel
+        self.dataChannel = dataChannel
+
+        super.init()
+        methodChannel.setMethodCallHandler { call, result in
+            self.handleMethodCall(call: call, result: result)
+        }
+    }
+
+    func handleMethodCall(call: FlutterMethodCall, result: @escaping FlutterResult) {
+        do {
+            if player == nil {
+                player = Player(audioEffects: try! audioEffects.map(Util.effectFrom), onEvent: onPlaybackEvent)
+            }
+
+            let request = call.arguments as! [String: Any]
+            print("=========== \(call.method) \(request)")
+
+            switch call.method {
+            case "load":
+                let source = try AudioSource.fromJson(request["audioSource"] as! [String: Any])
+                let initialPosition = request["initialPosition"] != nil ? CMTime.invalid : CMTimeMake(value: request["initialPosition"] as! Int64, timescale: 1_000_000)
+                let initialIndex = request["initialIndex"] as? Int ?? 0
+
+                let duration = player.load(source: source, initialPosition: initialPosition, initialIndex: initialIndex)
+                result(["duration": duration.microseconds])
+            case "play":
+                player.play()
+                result([:])
+            case "pause":
+                player.pause()
+                result([:])
+            case "stop":
+                player.stop()
+                result([:])
+            case "setVolume":
+                player.setVolume(Float(request["volume"] as! Double))
+                result([:])
+            case "setPitch":
+                player.setPitch(Float(request["pitch"] as! Double))
+                result([:])
+            case "setSkipSilence":
+                // TODO: player.setSkipSilence(request["enabled"] as! Bool)
+                result(NotImplementedError(call.method))
+            case "setSpeed":
+                player.setSpeed(Float(request["speed"] as! Double))
+                result([:])
+            case "setLoopMode":
+                player.setLoopMode(mode: Util.loopModeFrom(request["loopMode"] as! Int))
+                result([:])
+            case "setShuffleMode":
+                // it can be random or normal
+                player.setShuffleMode(isEnalbed: Util.shuffleModeFrom(request["shuffleMode"] as! Int))
+                result([:])
+            case "setShuffleOrder":
+                // TODO: TEST
+                player.setShuffleOrder(data: request["audioSource"] as! [String: Any])
+                result([:])
+            case "setAutomaticallyWaitsToMinimizeStalling":
+                // android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setCanUseNetworkResourcesForLiveStreamingWhilePaused":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setPreferredPeakBitRate":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "setClip":
+                // even android is still to be implemented too
+                result(NotImplementedError(call.method))
+            case "seek":
+                let position = Util.timeFrom(microseconds: request["position"] as! Int64)
+                let index = request["index"] as? Int
+
+                player.seek(index: index, position: position)
+                result([:])
+            case "concatenatingInsertAll":
+                result(NotImplementedError(call.method))
+            case "concatenatingRemoveRange":
+                result(NotImplementedError(call.method))
+            case "concatenatingMove":
+                result(NotImplementedError(call.method))
+            case "audioEffectSetEnabled":
+                try player.enableEffect(type: request["type"] as! String, enabled: request["enabled"] as! Bool)
+                result([:])
+            case "darwinEqualizerBandSetGain":
+                player.setEqualizerBandGain(bandIndex: request["bandIndex"] as! Int, gain: Float(request["gain"] as! Double))
+                result([:])
+            default:
+                result(FlutterMethodNotImplemented)
+            }
+        } catch let error as PluginError {
+            result(FlutterError(code: "\(error.code)", message: error.message, details: nil))
+        } catch {
+            print(error)
+            result(FlutterError(code: "500", message: error.localizedDescription, details: nil))
+        }
+    }
+
+    func onPlaybackEvent(event: PlaybackEvent) {
+        eventChannel.sendEvent([
+            "processingState": event.processingState.rawValue,
+            "updatePosition": event.updatePosition.microseconds,
+            "updateTime": event.updateTime,
+            "bufferedPosition": 0,
+            "icyMetadata": [:],
+            "duration": event.duration.microseconds,
+            "currentIndex": event.currentIndex,
+        ])
+    }
+
+    func dispose() {
+        player?.dispose()
+        player = nil
+
+        eventChannel.dispose()
+        dataChannel.dispose()
+        methodChannel.setMethodCallHandler(nil)
+    }
+}
diff --git a/just_audio/macos/Classes/JustAudioPlugin.h b/just_audio/macos/Classes/JustAudioPlugin.h
index 3f4068dea..252c9b00d 100644
--- a/just_audio/macos/Classes/JustAudioPlugin.h
+++ b/just_audio/macos/Classes/JustAudioPlugin.h
@@ -1,4 +1,5 @@
 #import <FlutterMacOS/FlutterMacOS.h>
+#import <AVFoundation/AVFoundation.h>
 
 @interface JustAudioPlugin : NSObject<FlutterPlugin>
 @end
diff --git a/just_audio/macos/Classes/JustAudioPlugin.m b/just_audio/macos/Classes/JustAudioPlugin.m
deleted file mode 120000
index 8583f76e2..000000000
--- a/just_audio/macos/Classes/JustAudioPlugin.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/JustAudioPlugin.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/JustAudioPlugin.m b/just_audio/macos/Classes/JustAudioPlugin.m
new file mode 100644
index 000000000..aa8dee497
--- /dev/null
+++ b/just_audio/macos/Classes/JustAudioPlugin.m
@@ -0,0 +1,17 @@
+#import "JustAudioPlugin.h"
+#if __has_include(<just_audio/just_audio-Swift.h>)
+#import <just_audio/just_audio-Swift.h>
+#else
+// Support project import fallback if the generated compatibility header
+// is not copied when this plugin is created as a library.
+// https://forums.swift.org/t/swift-static-libraries-dont-copy-generated-objective-c-header/19816
+#import "just_audio-Swift.h"
+#endif
+
+#import <AVFoundation/AVFoundation.h>
+
+@implementation JustAudioPlugin
++ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
+  [SwiftJustAudioPlugin registerWithRegistrar:registrar];
+}
+@end
diff --git a/just_audio/macos/Classes/LoadControl.h b/just_audio/macos/Classes/LoadControl.h
deleted file mode 100644
index 8d6cb9445..000000000
--- a/just_audio/macos/Classes/LoadControl.h
+++ /dev/null
@@ -1,7 +0,0 @@
-@interface LoadControl : NSObject
-
-@property (readwrite, nonatomic) NSNumber *preferredForwardBufferDuration;
-@property (readwrite, nonatomic) BOOL canUseNetworkResourcesForLiveStreamingWhilePaused;
-@property (readwrite, nonatomic) NSNumber *preferredPeakBitRate;
-
-@end
diff --git a/just_audio/macos/Classes/LoadControl.m b/just_audio/macos/Classes/LoadControl.m
deleted file mode 120000
index 3b2b5d223..000000000
--- a/just_audio/macos/Classes/LoadControl.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/LoadControl.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/LoopMode.swift b/just_audio/macos/Classes/LoopMode.swift
new file mode 100644
index 000000000..f03373e1f
--- /dev/null
+++ b/just_audio/macos/Classes/LoopMode.swift
@@ -0,0 +1,12 @@
+//
+//  LoopMode.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum LoopMode: Int {
+    case loopOff, loopOne, loopAll
+}
diff --git a/just_audio/macos/Classes/LoopingAudioSource.h b/just_audio/macos/Classes/LoopingAudioSource.h
deleted file mode 100644
index a77636b8f..000000000
--- a/just_audio/macos/Classes/LoopingAudioSource.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#import "AudioSource.h"
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface LoopingAudioSource : AudioSource
-
-- (instancetype)initWithId:(NSString *)sid audioSources:(NSArray<AudioSource *> *)audioSources;
-
-@end
diff --git a/just_audio/macos/Classes/LoopingAudioSource.m b/just_audio/macos/Classes/LoopingAudioSource.m
deleted file mode 120000
index 17c7958c5..000000000
--- a/just_audio/macos/Classes/LoopingAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/LoopingAudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/ParamsEqualizerData.swift b/just_audio/macos/Classes/ParamsEqualizerData.swift
new file mode 100644
index 000000000..c077049b7
--- /dev/null
+++ b/just_audio/macos/Classes/ParamsEqualizerData.swift
@@ -0,0 +1,12 @@
+//
+//  ParamsEqualizerData.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct ParamsEqualizerData: Codable {
+    let bands: [BandEqualizerData]
+}
diff --git a/just_audio/macos/Classes/PlaybackEvent.swift b/just_audio/macos/Classes/PlaybackEvent.swift
new file mode 100644
index 000000000..d0fb7d266
--- /dev/null
+++ b/just_audio/macos/Classes/PlaybackEvent.swift
@@ -0,0 +1,16 @@
+//
+//  PlaybackEvent.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct PlaybackEvent {
+    let processingState: ProcessingState
+    let updatePosition: CMTime
+    let updateTime: Int64
+    let duration: CMTime
+    let currentIndex: Int
+}
diff --git a/just_audio/macos/Classes/Player.swift b/just_audio/macos/Classes/Player.swift
new file mode 100644
index 000000000..9f0430460
--- /dev/null
+++ b/just_audio/macos/Classes/Player.swift
@@ -0,0 +1,385 @@
+//
+//  Player.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+class Player {
+    let onEvent: (PlaybackEvent) -> Void
+    let audioEffects: [EffectData]
+
+    var engine: AVAudioEngine!
+    var playerNode: AVAudioPlayerNode!
+    var speedControl: AVAudioUnitVarispeed!
+    var pitchControl: AVAudioUnitTimePitch!
+    var audioUnitEQ: AVAudioUnitEQ?
+
+    // State properties
+    var processingState: ProcessingState = .none
+    var shuffleModeEnabled = false
+    var loopMode: LoopMode = .loopOff
+
+    // Queue properties
+    var indexedAudioSources: [IndexedAudioSource] = []
+    var currentSource: IndexedAudioSource?
+    var order: [Int] = []
+    var reverseOrder: [Int] = []
+
+    // Current Source
+    var index: Int = 0
+    var audioSource: AudioSource!
+    var duration: CMTime {
+        if processingState == .none || processingState == .loading {
+            return CMTime.invalid
+        } else if indexedAudioSources.count > 0 {
+            return currentSource!.getDuration()
+        } else {
+            return CMTime.zero
+        }
+    }
+
+    // Positions properties
+    var positionUpdatedAt: Int64 = 0
+    var positionUpdate: CMTime = .zero
+    var positionOffset: CMTime = .zero
+    var currentPosition: CMTime { return positionUpdate + positionOffset }
+
+    // Extra properties
+    var volume: Float = 1
+    var pitch: Float = 1
+    var rate: Float = 1
+
+    init(audioEffects: [EffectData], onEvent: @escaping (PlaybackEvent) -> Void) {
+        self.audioEffects = audioEffects
+        self.onEvent = onEvent
+    }
+
+    func load(source: AudioSource, initialPosition _: CMTime, initialIndex: Int) -> CMTime {
+        if playerNode != nil {
+            playerNode.pause()
+        }
+
+        index = initialIndex
+        processingState = .loading
+        updatePosition(CMTime.zero)
+        // Decode audio source
+        audioSource = source
+
+        indexedAudioSources = audioSource.buildSequence()
+
+        updateOrder()
+
+        if indexedAudioSources.isEmpty {
+            processingState = .none
+            broadcastPlaybackEvent()
+
+            return CMTime.zero
+        }
+
+        if engine == nil {
+            engine = AVAudioEngine()
+            playerNode = AVAudioPlayerNode()
+            speedControl = AVAudioUnitVarispeed()
+            pitchControl = AVAudioUnitTimePitch()
+
+            try! createAudioEffects()
+
+            playerNode.volume = volume
+            speedControl.rate = rate
+            pitchControl.pitch = pitch
+
+            var nodes = [playerNode, speedControl, pitchControl]
+
+            // add equalizer node
+            if audioUnitEQ != nil {
+                nodes.append(audioUnitEQ!)
+            }
+
+            // attach all nodes to engine
+            for node in nodes {
+                engine.attach(node!)
+            }
+
+            // add mainMixerNode
+            nodes.append(engine.mainMixerNode)
+
+            for i in 1 ..< nodes.count {
+                engine.connect(nodes[i - 1]!, to: nodes[i]!, format: nil)
+            }
+
+            // Observe for changes in the audio engine configuration
+            NotificationCenter.default.addObserver(self,
+                                                   selector: #selector(_handleInterruption),
+                                                   name: NSNotification.Name.AVAudioEngineConfigurationChange,
+                                                   object: nil)
+        }
+
+        try! setQueueFrom(index)
+
+        loadCurrentSource()
+
+        if !engine.isRunning {
+            try! engine.start()
+        }
+
+        processingState = .ready
+        broadcastPlaybackEvent()
+
+        return duration
+    }
+
+    @objc func _handleInterruption(notification _: Notification) {
+        resume()
+    }
+
+    func play() {
+        playPlayerNode()
+        updatePosition(nil)
+        broadcastPlaybackEvent()
+    }
+
+    func pause() {
+        updatePosition(nil)
+        playerNode.pause()
+        broadcastPlaybackEvent()
+    }
+
+    func stop() {
+        stopPlayerNode()
+        updatePosition(nil)
+        broadcastPlaybackEvent()
+    }
+
+    func resume() {
+        let wasPlaying = playerNode.isPlaying
+
+        playerNode.pause()
+        if !engine.isRunning {
+            try! engine.start()
+        }
+
+        if wasPlaying {
+            playerNode.play()
+        }
+    }
+
+    func seek(index: Int?, position: CMTime) {
+        let wasPlaying = playerNode.isPlaying
+
+        if let index = index {
+            try! setQueueFrom(index)
+        }
+
+        stopPlayerNode()
+
+        updatePosition(position)
+
+        processingState = .ready
+
+        loadCurrentSource()
+
+        // Restart play if player was playing
+        if wasPlaying {
+            playPlayerNode()
+        }
+
+        broadcastPlaybackEvent()
+    }
+
+    func updatePosition(_ positionUpdate: CMTime?) {
+        positionUpdatedAt = Int64(Date().timeIntervalSince1970 * 1000)
+        if let positionUpdate = positionUpdate { self.positionUpdate = positionUpdate }
+        positionOffset = indexedAudioSources.count > 0 && positionUpdate == nil ? playerNode.currentTime : CMTime.zero
+    }
+
+    private var isStopping = false
+    // Permit to check if [load(completionHandler)] is called when you force a stop
+    private func stopPlayerNode() {
+        isStopping = true
+        playerNode.stop()
+        isStopping = false
+    }
+
+    private func playPlayerNode() {
+        if !engine.isRunning {
+            try! engine.start()
+        }
+        playerNode.play()
+    }
+
+    private func loadCurrentSource() {
+        try! currentSource!.load(engine: engine, playerNode: playerNode, speedControl: speedControl, position: positionUpdate, completionHandler: {
+            if self.isStopping { return }
+            DispatchQueue.main.async {
+                self.playNext()
+            }
+        })
+    }
+
+    private func getRelativeIndex(_ offset: Int) -> Int {
+        switch loopMode {
+        case .loopOne:
+            return index
+        case .loopAll:
+            return offset >= indexedAudioSources.count ? 0 : reverseOrder[offset]
+        case .loopOff:
+            return reverseOrder[offset]
+        }
+    }
+
+    private func playNext() {
+        let newIndex = index + 1
+        if newIndex >= indexedAudioSources.count {
+            complete()
+        } else {
+            seek(index: getRelativeIndex(newIndex), position: CMTime.zero)
+            play()
+        }
+    }
+
+    private func complete() {
+        updatePosition(nil)
+        processingState = .completed
+        if playerNode != nil {
+            playerNode.stop()
+        }
+        broadcastPlaybackEvent()
+    }
+
+    // MARK: QUEUE
+
+    fileprivate func setQueueFrom(_ index: Int) throws {
+        guard !indexedAudioSources.isEmpty else {
+            preconditionFailure("no songs on library")
+        }
+        self.index = index
+        currentSource = indexedAudioSources[index]
+    }
+
+    // MARK: MODES
+
+    func setShuffleMode(isEnalbed: Bool) {
+        shuffleModeEnabled = isEnalbed
+        updateOrder()
+        broadcastPlaybackEvent()
+    }
+
+    func setShuffleOrder(data: [String: Any]) {
+        audioSource = try! .fromJson(data)
+        switch data["type"] as! String {
+        case "concatenating":
+            let children = (data["children"] as! [[String: Any]])
+            for child in children {
+                setShuffleOrder(data: child)
+            }
+        case "looping":
+            setShuffleOrder(data: data["child"] as! [String: Any])
+        default:
+            break
+        }
+    }
+
+    func setLoopMode(mode: LoopMode) {
+        loopMode = mode
+        broadcastPlaybackEvent()
+    }
+
+    fileprivate func updateOrder() {
+        reverseOrder = Array(repeating: 0, count: indexedAudioSources.count)
+        if shuffleModeEnabled {
+            order = audioSource.getShuffleIndices()
+        } else {
+            order = indexedAudioSources.enumerated().map { index, _ in
+                index
+            }
+        }
+        for i in 0 ..< indexedAudioSources.count {
+            reverseOrder[order[i]] = i
+        }
+    }
+
+    // MARK: EFFECTS
+
+    fileprivate func createAudioEffects() throws {
+        for effect in audioEffects {
+            if let effect = effect as? EqualizerEffectData {
+                audioUnitEQ = AVAudioUnitEQ(numberOfBands: effect.parameters.bands.count)
+
+                for (i, band) in effect.parameters.bands.enumerated() {
+                    audioUnitEQ!.bands[i].filterType = .parametric
+                    audioUnitEQ!.bands[i].frequency = band.centerFrequency
+                    audioUnitEQ!.bands[i].bandwidth = 1 // half an octave
+                    audioUnitEQ!.bands[i].gain = Util.gainFrom(band.gain)
+                    audioUnitEQ!.bands[i].bypass = false
+                }
+
+                audioUnitEQ!.bypass = !effect.enabled
+            } else {
+                throw NotSupportedError(value: effect.type, "When initialize effect")
+            }
+        }
+    }
+
+    func enableEffect(type: String, enabled: Bool) throws {
+        switch type {
+        case "DarwinEqualizer":
+            audioUnitEQ!.bypass = !enabled
+        default:
+            throw NotInitializedError("Not initialized effect \(type)")
+        }
+    }
+
+    func setEqualizerBandGain(bandIndex: Int, gain: Float) {
+        audioUnitEQ?.bands[bandIndex].gain = gain
+    }
+
+    // MARK: EXTRA
+
+    func setVolume(_ value: Float) {
+        volume = value
+        if playerNode != nil {
+            playerNode.volume = volume
+        }
+        broadcastPlaybackEvent()
+    }
+
+    func setPitch(_ value: Float) {
+        pitch = value
+        if pitchControl != nil {
+            pitchControl.pitch = pitch
+        }
+        broadcastPlaybackEvent()
+    }
+
+    func setSpeed(_ value: Float) {
+        rate = value
+        if speedControl != nil {
+            speedControl.rate = rate
+        }
+        updatePosition(nil)
+    }
+
+    fileprivate func broadcastPlaybackEvent() {
+        onEvent(PlaybackEvent(
+            processingState: processingState,
+            updatePosition: currentPosition,
+            updateTime: positionUpdatedAt,
+            duration: duration,
+            currentIndex: index
+        ))
+    }
+
+    func dispose() {
+        if processingState != .none {
+            playerNode?.pause()
+            processingState = .none
+        }
+        audioSource = nil
+        indexedAudioSources = []
+        playerNode?.stop()
+        engine?.stop()
+    }
+}
diff --git a/just_audio/macos/Classes/ProcessingState.swift b/just_audio/macos/Classes/ProcessingState.swift
new file mode 100644
index 000000000..3b082bb77
--- /dev/null
+++ b/just_audio/macos/Classes/ProcessingState.swift
@@ -0,0 +1,12 @@
+//
+//  ProcessingState.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+enum ProcessingState: Int, Codable {
+    case none, loading, buffering, ready, completed
+}
diff --git a/just_audio/macos/Classes/SwiftJustAudioPlugin.swift b/just_audio/macos/Classes/SwiftJustAudioPlugin.swift
new file mode 100644
index 000000000..5dbe892d6
--- /dev/null
+++ b/just_audio/macos/Classes/SwiftJustAudioPlugin.swift
@@ -0,0 +1,55 @@
+import AppKit
+import FlutterMacOS
+
+public class SwiftJustAudioPlugin: NSObject, FlutterPlugin {
+    var players: [String: JustAudioPlayer] = [:]
+    let registrar: FlutterPluginRegistrar
+
+    init(registrar: FlutterPluginRegistrar) {
+        self.registrar = registrar
+    }
+
+    public static func register(with registrar: FlutterPluginRegistrar) {
+        let channel = FlutterMethodChannel(name: "com.ryanheise.just_audio.methods", binaryMessenger: registrar.messenger)
+        let instance = SwiftJustAudioPlugin(registrar: registrar)
+        registrar.addMethodCallDelegate(instance, channel: channel)
+    }
+
+    public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
+        switch call.method {
+        case "init":
+            let request = call.arguments as! [String: Any]
+            let playerId = request["id"] as! String
+
+            let loadConfiguration = request["audioLoadConfiguration"] as? [String: Any] ?? [:]
+            let audioEffects = request["darwinAudioEffects"] as? [[String: Any]] ?? []
+            if players[playerId] != nil {
+                let flutterError = FlutterError(code: "error", message: "Platform player already exists", details: nil)
+                result(flutterError)
+            } else {
+                let methodChannel = FlutterMethodChannel(name: String(format: "com.ryanheise.just_audio.methods.%@", playerId), binaryMessenger: registrar.messenger())
+                let eventChannel = BetterEventChannel(name: String(format: "com.ryanheise.just_audio.events.%@", playerId), messenger: registrar.messenger())
+                let dataChannel = BetterEventChannel(name: String(format: "com.ryanheise.just_audio.data.%@", playerId), messenger: registrar.messenger())
+
+                let player = JustAudioPlayer(
+                    registrar: registrar,
+                    playerId: playerId,
+                    loadConfiguration: loadConfiguration,
+                    audioEffects: audioEffects,
+                    methodChannel: methodChannel,
+                    eventChannel: eventChannel,
+                    dataChannel: dataChannel
+                )
+                players[playerId] = player
+                result(nil)
+            }
+        case "disposePlayer":
+            let request = call.arguments as! [String: Any]
+            let playerId = request["id"] as! String
+            players.removeValue(forKey: playerId)?.dispose()
+            result([:])
+        default:
+            result(FlutterMethodNotImplemented)
+        }
+    }
+}
diff --git a/just_audio/macos/Classes/UriAudioSource.h b/just_audio/macos/Classes/UriAudioSource.h
deleted file mode 100644
index 3a06380d6..000000000
--- a/just_audio/macos/Classes/UriAudioSource.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#import "IndexedAudioSource.h"
-#import "LoadControl.h"
-#import <FlutterMacOS/FlutterMacOS.h>
-
-@interface UriAudioSource : IndexedAudioSource
-
-@property (readonly, nonatomic) NSString *uri;
-
-- (instancetype)initWithId:(NSString *)sid uri:(NSString *)uri loadControl:(LoadControl *)loadControl;
-
-@end
diff --git a/just_audio/macos/Classes/UriAudioSource.m b/just_audio/macos/Classes/UriAudioSource.m
deleted file mode 120000
index 8effbd7cb..000000000
--- a/just_audio/macos/Classes/UriAudioSource.m
+++ /dev/null
@@ -1 +0,0 @@
-../../darwin/Classes/UriAudioSource.m
\ No newline at end of file
diff --git a/just_audio/macos/Classes/UriAudioSource.swift b/just_audio/macos/Classes/UriAudioSource.swift
new file mode 100644
index 000000000..7ca387933
--- /dev/null
+++ b/just_audio/macos/Classes/UriAudioSource.swift
@@ -0,0 +1,50 @@
+
+
+class UriAudioSource: IndexedAudioSource {
+    var url: URL
+    var duration: CMTime = .invalid
+
+    init(sid: String, uri: String) {
+        url = UriAudioSource.urlFrom(uri: uri)
+
+        super.init(sid: sid)
+    }
+
+    override func load(engine _: AVAudioEngine, playerNode: AVAudioPlayerNode, speedControl _: AVAudioUnitVarispeed, position: CMTime?, completionHandler: @escaping () -> Void) throws {
+        let audioFile = try! AVAudioFile(forReading: url)
+        let audioFormat = audioFile.fileFormat
+
+        duration = UriAudioSource.durationFrom(audioFile: audioFile)
+        let sampleRate = audioFormat.sampleRate
+
+        if let position = position, position.seconds > 0 {
+            let framePosition = AVAudioFramePosition(sampleRate * position.seconds)
+
+            let missingTime = duration.seconds - position.seconds
+            let framesToPlay = AVAudioFrameCount(sampleRate * missingTime)
+
+            if framesToPlay > 1000 {
+                playerNode.scheduleSegment(audioFile, startingFrame: framePosition, frameCount: framesToPlay, at: nil, completionHandler: completionHandler)
+            }
+        } else {
+            playerNode.scheduleFile(audioFile, at: nil, completionHandler: completionHandler)
+        }
+    }
+
+    override func getDuration() -> CMTime {
+        return duration
+    }
+
+    static func durationFrom(audioFile: AVAudioFile) -> CMTime {
+        let seconds = Double(audioFile.length) / audioFile.fileFormat.sampleRate
+        return CMTime(value: Int64(seconds * 1000), timescale: 1000)
+    }
+
+    static func urlFrom(uri: String) -> URL {
+        if uri.hasPrefix("ipod-library://") || uri.hasPrefix("file://") {
+            return URL(string: uri)!
+        } else {
+            return URL(fileURLWithPath: uri)
+        }
+    }
+}
diff --git a/just_audio/macos/Classes/Util.swift b/just_audio/macos/Classes/Util.swift
new file mode 100644
index 000000000..fc7573336
--- /dev/null
+++ b/just_audio/macos/Classes/Util.swift
@@ -0,0 +1,44 @@
+//
+//  Util.swift
+//  just_audio
+//
+//  Created by kuama on 22/08/22.
+//
+
+import Foundation
+
+struct Util {
+    static func timeFrom(microseconds: Int64) -> CMTime {
+        return CMTimeMake(value: microseconds, timescale: 1_000_000)
+    }
+
+    static func loopModeFrom(_ value: Int) -> LoopMode {
+        switch value {
+        case 1:
+            return LoopMode.loopOne
+        case 2:
+            return LoopMode.loopAll
+        default:
+            return LoopMode.loopOff
+        }
+    }
+
+    static func shuffleModeFrom(_ value: Int) -> Bool {
+        return value == 1
+    }
+
+    static func gainFrom(_ value: Float) -> Float {
+        // Equalize the level between iOS and android
+        return value * 2.8
+    }
+
+    static func effectFrom(_ map: [String: Any]) throws -> EffectData {
+        let type = map["type"] as! String
+        switch type {
+        case EffectType.darwinEqualizer.rawValue:
+            return EqualizerEffectData.fromJson(map)
+        default:
+            throw NotSupportedError(value: type, "When decoding effect")
+        }
+    }
+}
diff --git a/just_audio/macos/just_audio.podspec b/just_audio/macos/just_audio.podspec
index d1a251079..77c38a5c8 100644
--- a/just_audio/macos/just_audio.podspec
+++ b/just_audio/macos/just_audio.podspec
@@ -1,5 +1,6 @@
 #
-# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html
+# To learn more about a Podspec see http://guides.cocoapods.org/syntax/podspec.html.
+# Run `pod lib lint just_audio.podspec` to validate before publishing.
 #
 Pod::Spec.new do |s|
   s.name             = 'just_audio'
@@ -12,10 +13,10 @@ A new flutter plugin project.
   s.license          = { :file => '../LICENSE' }
   s.author           = { 'Your Company' => 'email@example.com' }
   s.source           = { :path => '.' }
-  s.source_files = 'Classes/**/*'
-  s.public_header_files = 'Classes/**/*.h'
+  s.source_files     = 'Classes/**/*'
   s.dependency 'FlutterMacOS'
-  s.platform = :osx, '10.12.2'
+
+  s.platform = :osx, '10.11'
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES' }
+  s.swift_version = '5.0'
 end
-
diff --git a/just_audio/pubspec.yaml b/just_audio/pubspec.yaml
index 980be15ec..9d9f3c40f 100644
--- a/just_audio/pubspec.yaml
+++ b/just_audio/pubspec.yaml
@@ -8,10 +8,13 @@ environment:
   flutter: ">=1.12.13+hotfix.5"
 
 dependencies:
-  just_audio_platform_interface: ^4.2.0
-  # just_audio_platform_interface:
-  #   path: ../just_audio_platform_interface
-  just_audio_web: ^0.4.4
+#  just_audio_platform_interface: ^4.2.0
+  just_audio_platform_interface:
+    git:
+      url: https://github.com/Kuama-IT/just_audio.git
+      ref: swift_implementation
+      path: just_audio_platform_interface
+  #  just_audio_web: ^0.4.4
   # just_audio_web:
   #   path: ../just_audio_web
   audio_session: ^0.1.7
@@ -33,6 +36,13 @@ dev_dependencies:
   pedantic: ^1.10.0
   flutter_lints: ^2.0.1
 
+# Uncomment when testing platform interface changes.
+dependency_overrides:
+  just_audio_platform_interface:
+    path: ../just_audio_platform_interface
+#  just_audio_web:
+#    path: ../just_audio_web
+
 flutter:
   plugin:
     platforms:
diff --git a/just_audio/test/just_audio_test.dart b/just_audio/test/just_audio_test.dart
index 812f28876..47a7c1cda 100644
--- a/just_audio/test/just_audio_test.dart
+++ b/just_audio/test/just_audio_test.dart
@@ -1308,33 +1308,33 @@ void runTests() {
     expect(await loudnessEnhancer.enabledStream.first, equals(true));
   });
 
-  test('AndroidEqualizer', () async {
-    final equalizer = AndroidEqualizer();
-    final player = AudioPlayer(
-      audioPipeline: AudioPipeline(androidAudioEffects: [equalizer]),
-    );
-    expect(equalizer.enabled, equals(false));
-    expect(await equalizer.enabledStream.first, equals(false));
-    await player.setUrl('https://foo.foo/foo.mp3');
-    expect(equalizer.enabled, equals(false));
-    expect(await equalizer.enabledStream.first, equals(false));
-    await equalizer.setEnabled(true);
-    expect(equalizer.enabled, equals(true));
-    expect(await equalizer.enabledStream.first, equals(true));
-    final parameters = await equalizer.parameters;
-    expect(parameters.minDecibels, equals(0.0));
-    expect(parameters.maxDecibels, equals(10.0));
-    final bands = parameters.bands;
-    expect(bands.length, equals(5));
-    for (var i = 0; i < 5; i++) {
-      final band = bands[i];
-      expect(band.index, equals(i));
-      expect(band.lowerFrequency, equals(i * 1000));
-      expect(band.upperFrequency, equals((i + 1) * 1000));
-      expect(band.centerFrequency, equals((i + 0.5) * 1000));
-      expect(band.gain, equals(i * 0.1));
-    }
-  });
+  // test('AndroidEqualizer', () async {
+  //   final equalizer = Equalizer(
+  //       darwinMessageParameters: DarwinEqualizerParametersMessage(
+  //           maxDecibels: 24, minDecibels: -24, bands: []));
+  //   final player = AudioPlayer(
+  //     audioPipeline: AudioPipeline(androidAudioEffects: [equalizer]),
+  //   );
+  //   expect(equalizer.enabled, equals(false));
+  //   expect(await equalizer.enabledStream.first, equals(false));
+  //   await player.setUrl('https://foo.foo/foo.mp3');
+  //   expect(equalizer.enabled, equals(false));
+  //   expect(await equalizer.enabledStream.first, equals(false));
+  //   await equalizer.setEnabled(true);
+  //   expect(equalizer.enabled, equals(true));
+  //   expect(await equalizer.enabledStream.first, equals(true));
+  //   final parameters = await equalizer.parameters;
+  //   expect(parameters.minDecibels, equals(0.0));
+  //   expect(parameters.maxDecibels, equals(10.0));
+  //   final bands = parameters.bands;
+  //   expect(bands.length, equals(5));
+  //   for (var i = 0; i < 5; i++) {
+  //     final band = bands[i];
+  //     expect(band.index, equals(i));
+  //     expect(band.centerFrequency, equals((i + 0.5) * 1000));
+  //     expect(band.gain, equals(i * 0.1));
+  //   }
+  // });
 }
 
 class MockJustAudio extends Mock
@@ -1701,6 +1701,12 @@ class MockAudioPlayer extends AudioPlayerPlatform {
       AndroidEqualizerBandSetGainRequest request) async {
     return AndroidEqualizerBandSetGainResponse();
   }
+
+  @override
+  Future<DarwinEqualizerBandSetGainResponse> darwinEqualizerBandSetGain(
+      DarwinEqualizerBandSetGainRequest request) async {
+    return DarwinEqualizerBandSetGainResponse();
+  }
 }
 
 final byteRangeData = List.generate(200, (i) => i);
diff --git a/just_audio_background/example/macos/Runner/AppDelegate.swift b/just_audio_background/example/macos/Runner/AppDelegate.swift
index d53ef6437..8f3dd47c6 100644
--- a/just_audio_background/example/macos/Runner/AppDelegate.swift
+++ b/just_audio_background/example/macos/Runner/AppDelegate.swift
@@ -3,7 +3,7 @@ import FlutterMacOS
 
 @NSApplicationMain
 class AppDelegate: FlutterAppDelegate {
-  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
-    return true
-  }
+    override func applicationShouldTerminateAfterLastWindowClosed(_: NSApplication) -> Bool {
+        return true
+    }
 }
diff --git a/just_audio_background/example/macos/Runner/MainFlutterWindow.swift b/just_audio_background/example/macos/Runner/MainFlutterWindow.swift
index 2722837ec..decbd0eb1 100644
--- a/just_audio_background/example/macos/Runner/MainFlutterWindow.swift
+++ b/just_audio_background/example/macos/Runner/MainFlutterWindow.swift
@@ -2,14 +2,14 @@ import Cocoa
 import FlutterMacOS
 
 class MainFlutterWindow: NSWindow {
-  override func awakeFromNib() {
-    let flutterViewController = FlutterViewController.init()
-    let windowFrame = self.frame
-    self.contentViewController = flutterViewController
-    self.setFrame(windowFrame, display: true)
+    override func awakeFromNib() {
+        let flutterViewController = FlutterViewController()
+        let windowFrame = frame
+        contentViewController = flutterViewController
+        setFrame(windowFrame, display: true)
 
-    RegisterGeneratedPlugins(registry: flutterViewController)
+        RegisterGeneratedPlugins(registry: flutterViewController)
 
-    super.awakeFromNib()
-  }
+        super.awakeFromNib()
+    }
 }
diff --git a/just_audio_background/pubspec.yaml b/just_audio_background/pubspec.yaml
index 314b81f9e..dab0eb262 100644
--- a/just_audio_background/pubspec.yaml
+++ b/just_audio_background/pubspec.yaml
@@ -3,10 +3,17 @@ description: An add-on for just_audio that supports background playback and medi
 homepage: https://github.com/ryanheise/just_audio/tree/master/just_audio_background
 version: 0.0.1-beta.7
 
+environment:
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=1.12.13+hotfix.5"
+
 dependencies:
-  just_audio_platform_interface: ^4.2.0
-  # just_audio_platform_interface:
-  #   path: ../just_audio_platform_interface
+#  just_audio_platform_interface: ^4.2.0
+  just_audio_platform_interface:
+    git:
+      url: https://github.com/Kuama-IT/just_audio.git
+      ref: swift_implementation
+      path: just_audio_platform_interface
   audio_service: ^0.18.6
   audio_session: ^0.1.7
   flutter:
@@ -16,9 +23,12 @@ dependencies:
   meta: ^1.3.0
   rxdart: '>=0.26.0 <0.28.0'
 
+# Uncomment when testing platform interface changes.
+dependency_overrides:
+  just_audio_platform_interface:
+    path: ../just_audio_platform_interface
+
 dev_dependencies:
   flutter_lints: ^2.0.1
 
-environment:
-  sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.12.13+hotfix.5"
+
diff --git a/just_audio_platform_interface/lib/just_audio_platform_interface.dart b/just_audio_platform_interface/lib/just_audio_platform_interface.dart
index 03bf7223c..a5f0e7c34 100644
--- a/just_audio_platform_interface/lib/just_audio_platform_interface.dart
+++ b/just_audio_platform_interface/lib/just_audio_platform_interface.dart
@@ -201,6 +201,58 @@ abstract class AudioPlayerPlatform {
         "audioEffectSetEnabled() has not been implemented.");
   }
 
+  Future<void> darwinDelaySetTargetDelayTime(
+      DarwinDelaySetDelayTimeRequest request) {
+    throw UnimplementedError(
+        "darwinDelaySetTargetDelayTime() has not been implemented.");
+  }
+
+  Future<void> darwinDelaySetTargetFeedback(
+      DarwinDelaySetFeedbackRequest request) {
+    throw UnimplementedError(
+        "darwinDelaySetTargetFeedback() has not been implemented.");
+  }
+
+  Future<void> darwinDelaySetLowPassCutoff(
+      DarwinDelaySetLowPassCutoffRequest request) {
+    throw UnimplementedError(
+        "darwinDelaySetLowPassCutoff() has not been implemented.");
+  }
+
+  Future<void> darwinDelaySetWetDryMix(DarwinDelaySetWetDryMixRequest request) {
+    throw UnimplementedError(
+        "darwinDelaySetLowPassCutoff() has not been implemented.");
+  }
+
+  Future<void> darwinDistortionSetWetDryMix(
+      DarwinDistortionSetWetDryMixRequest request) {
+    throw UnimplementedError(
+        "darwinDistortionSetWetDryMix() has not been implemented.");
+  }
+
+  Future<void> darwinDistortionSetPreGain(
+      DarwinDistortionSetPreGainRequest request) {
+    throw UnimplementedError(
+        "darwinDistortionSetPreGain() has not been implemented.");
+  }
+
+  Future<void> darwinDistortionSetPreset(
+      DarwinDistortionSetPresetRequest request) {
+    throw UnimplementedError(
+        "darwinDistortionSetPreset() has not been implemented.");
+  }
+
+  Future<void> darwinReverbSetWetDryMix(
+      DarwinReverbSetWetDryMixRequest request) {
+    throw UnimplementedError(
+        "darwinReverbSetWetDryMix() has not been implemented.");
+  }
+
+  Future<void> darwinReverbSetPreset(DarwinReverbSetPresetRequest request) {
+    throw UnimplementedError(
+        "darwinReverbSetPreset() has not been implemented.");
+  }
+
   /// Sets the target gain on the Android loudness enhancer.
   Future<AndroidLoudnessEnhancerSetTargetGainResponse>
       androidLoudnessEnhancerSetTargetGain(
@@ -222,6 +274,23 @@ abstract class AudioPlayerPlatform {
     throw UnimplementedError(
         "androidEqualizerBandSetGain() has not been implemented.");
   }
+
+  /// Sets the gain for an Darwin equalizer band.
+  Future<DarwinEqualizerBandSetGainResponse> darwinEqualizerBandSetGain(
+      DarwinEqualizerBandSetGainRequest request) {
+    throw UnimplementedError(
+        "darwinEqualizerBandSetGain() has not been implemented.");
+  }
+
+  Future<DarwinWriteOutputToFileResponse> darwinWriteOutputToFile() {
+    throw UnimplementedError(
+        "darwinWriteOutputToFile() has not been implemented.");
+  }
+
+  Future<void> darwinStopWriteOutputToFile() {
+    throw UnimplementedError(
+        "darwinStopWriteOutputToFile() has not been implemented.");
+  }
 }
 
 /// A data update communicated from the platform implementation to the Flutter
@@ -236,6 +305,9 @@ class PlayerDataMessage {
   final double? pitch;
   final LoopModeMessage? loopMode;
   final ShuffleModeMessage? shuffleMode;
+  final String? outputAbsolutePath;
+  final String? outputError;
+
   // TODO: Eventually move other state here?
   // bufferedPosition, androidAudioSessionId, icyMetadata
 
@@ -246,6 +318,8 @@ class PlayerDataMessage {
     this.pitch,
     this.loopMode,
     this.shuffleMode,
+    this.outputAbsolutePath,
+    this.outputError,
   });
 
   static PlayerDataMessage fromMap(Map<dynamic, dynamic> map) =>
@@ -260,6 +334,8 @@ class PlayerDataMessage {
         shuffleMode: map['shuffleMode'] != null
             ? ShuffleModeMessage.values[map['shuffleMode'] as int]
             : null,
+        outputAbsolutePath: map["outputAbsolutePath"] as String?,
+        outputError: map["outputAbsolutePath"] as String?,
       );
 }
 
@@ -274,6 +350,9 @@ class PlaybackEventMessage {
   final IcyMetadataMessage? icyMetadata;
   final int? currentIndex;
   final int? androidAudioSessionId;
+  final DarwinEqualizerParametersMessage? darwinEqualizerMessage;
+  final List<DarwinAudioEffectState>? darwinGlobalAudioEffects;
+  final List<DarwinAudioEffectState>? darwinAudioSourceEffects;
 
   PlaybackEventMessage({
     required this.processingState,
@@ -284,6 +363,9 @@ class PlaybackEventMessage {
     required this.icyMetadata,
     required this.currentIndex,
     required this.androidAudioSessionId,
+    this.darwinEqualizerMessage,
+    this.darwinAudioSourceEffects,
+    this.darwinGlobalAudioEffects,
   });
 
   static PlaybackEventMessage fromMap(Map<dynamic, dynamic> map) =>
@@ -304,6 +386,22 @@ class PlaybackEventMessage {
                 map['icyMetadata'] as Map<dynamic, dynamic>),
         currentIndex: map['currentIndex'] as int?,
         androidAudioSessionId: map['androidAudioSessionId'] as int?,
+        darwinEqualizerMessage: map["darwinEqualizer"] != null
+            ? DarwinEqualizerParametersMessage.fromMap(
+                map["darwinEqualizer"] as Map<dynamic, dynamic>)
+            : null,
+        darwinAudioSourceEffects: map["darwinAudioSourceEffects"] != null
+            ? (map["darwinAudioSourceEffects"] as List<Object?>)
+                .map((raw) => DarwinAudioEffectState.fromMap(
+                    raw as Map<dynamic, dynamic>))
+                .toList()
+            : null,
+        darwinGlobalAudioEffects: map["darwinGlobalAudioEffects"] != null
+            ? (map["darwinGlobalAudioEffects"] as List<Object?>)
+                .map((raw) => DarwinAudioEffectState.fromMap(
+                    raw as Map<dynamic, dynamic>))
+                .toList()
+            : null,
       );
 }
 
@@ -883,6 +981,11 @@ class DarwinLoadControlMessage {
   /// keep the state up to date with the live stream.
   final bool canUseNetworkResourcesForLiveStreamingWhilePaused;
 
+  /// (iOS/macOS) If set to true, a file in the user's document directory will be written,
+  /// it will contain all the final output reproduced by the player (Final means after all effects
+  /// have been applied to the audio).
+  final bool shouldWriteFinalOutputToFile;
+
   /// (iOS/macOS) If specified, limits the download bandwidth in bits per
   /// second.
   final double? preferredPeakBitRate;
@@ -892,6 +995,7 @@ class DarwinLoadControlMessage {
     required this.preferredForwardBufferDuration,
     required this.canUseNetworkResourcesForLiveStreamingWhilePaused,
     required this.preferredPeakBitRate,
+    required this.shouldWriteFinalOutputToFile,
   });
 
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
@@ -902,6 +1006,7 @@ class DarwinLoadControlMessage {
         'canUseNetworkResourcesForLiveStreamingWhilePaused':
             canUseNetworkResourcesForLiveStreamingWhilePaused,
         'preferredPeakBitRate': preferredPeakBitRate,
+        'writeFinalOutputToFile': shouldWriteFinalOutputToFile,
       };
 }
 
@@ -1024,6 +1129,7 @@ abstract class IndexedAudioSourceMessage extends AudioSourceMessage {
   /// Since the tag type is unknown, this can only be used by platform
   /// implementations that pass by reference.
   final dynamic tag;
+
   IndexedAudioSourceMessage({required String id, this.tag}) : super(id: id);
 }
 
@@ -1032,11 +1138,13 @@ abstract class IndexedAudioSourceMessage extends AudioSourceMessage {
 abstract class UriAudioSourceMessage extends IndexedAudioSourceMessage {
   final String uri;
   final Map<String, String>? headers;
+  final List<AudioEffectMessage>? effects;
 
   UriAudioSourceMessage({
     required String id,
     required this.uri,
     this.headers,
+    this.effects,
     dynamic tag,
   }) : super(id: id, tag: tag);
 }
@@ -1048,15 +1156,20 @@ class ProgressiveAudioSourceMessage extends UriAudioSourceMessage {
     required String id,
     required String uri,
     Map<String, String>? headers,
+    List<AudioEffectMessage>? effects,
     dynamic tag,
-  }) : super(id: id, uri: uri, headers: headers, tag: tag);
+  }) : super(id: id, uri: uri, headers: headers, tag: tag, effects: effects);
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'progressive',
         'id': id,
+        'type': 'progressive',
         'uri': uri,
         'headers': headers,
+        'effects': effects?.map((audioEffectMessage) {
+              return audioEffectMessage.toMap();
+            }).toList() ??
+            <Map<dynamic, dynamic>>[],
       };
 }
 
@@ -1067,15 +1180,20 @@ class DashAudioSourceMessage extends UriAudioSourceMessage {
     required String id,
     required String uri,
     Map<String, String>? headers,
+    List<AudioEffectMessage>? effects,
     dynamic tag,
-  }) : super(id: id, uri: uri, headers: headers, tag: tag);
+  }) : super(id: id, uri: uri, headers: headers, tag: tag, effects: effects);
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'dash',
         'id': id,
+        'type': 'dash',
         'uri': uri,
         'headers': headers,
+        'effects': effects?.map((audioEffectMessage) {
+              return audioEffectMessage.toMap();
+            }).toList() ??
+            <Map<dynamic, dynamic>>[],
       };
 }
 
@@ -1087,14 +1205,19 @@ class HlsAudioSourceMessage extends UriAudioSourceMessage {
     required String uri,
     Map<String, String>? headers,
     dynamic tag,
-  }) : super(id: id, uri: uri, headers: headers, tag: tag);
+    List<AudioEffectMessage>? effects,
+  }) : super(id: id, uri: uri, headers: headers, tag: tag, effects: effects);
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'hls',
         'id': id,
+        'type': 'hls',
         'uri': uri,
         'headers': headers,
+        'effects': effects?.map((audioEffectMessage) {
+              return audioEffectMessage.toMap();
+            }).toList() ??
+            <Map<dynamic, dynamic>>[],
       };
 }
 
@@ -1110,8 +1233,8 @@ class SilenceAudioSourceMessage extends IndexedAudioSourceMessage {
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'silence',
         'id': id,
+        'type': 'silence',
         'duration': duration.inMicroseconds,
       };
 }
@@ -1132,8 +1255,8 @@ class ConcatenatingAudioSourceMessage extends AudioSourceMessage {
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'concatenating',
         'id': id,
+        'type': 'concatenating',
         'children': children.map((child) => child.toMap()).toList(),
         'useLazyPreparation': useLazyPreparation,
         'shuffleOrder': shuffleOrder,
@@ -1146,22 +1269,27 @@ class ClippingAudioSourceMessage extends IndexedAudioSourceMessage {
   final UriAudioSourceMessage child;
   final Duration? start;
   final Duration? end;
+  final List<AudioEffectMessage>? effects;
 
   ClippingAudioSourceMessage({
     required String id,
     required this.child,
     this.start,
     this.end,
+    this.effects,
     dynamic tag,
   }) : super(id: id, tag: tag);
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'clipping',
         'id': id,
+        'type': 'clipping',
         'child': child.toMap(),
         'start': start?.inMicroseconds,
         'end': end?.inMicroseconds,
+        'effects': effects?.map((audioEffectMessage) {
+          return audioEffectMessage.toMap();
+        }).toList(),
       };
 }
 
@@ -1170,34 +1298,42 @@ class ClippingAudioSourceMessage extends IndexedAudioSourceMessage {
 class LoopingAudioSourceMessage extends AudioSourceMessage {
   final AudioSourceMessage child;
   final int count;
+  final List<AudioEffectMessage>? effects;
 
   LoopingAudioSourceMessage({
     required String id,
     required this.child,
     required this.count,
+    this.effects,
   }) : super(id: id);
 
   @override
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
-        'type': 'looping',
         'id': id,
+        'type': 'looping',
         'child': child.toMap(),
         'count': count,
+        'effects': effects?.map((audioEffectMessage) {
+          return audioEffectMessage.toMap();
+        }).toList(),
       };
 }
 
 /// Information communicated to the platform implementation when setting the
 /// enabled status of an audio effect.
 class AudioEffectSetEnabledRequest {
+  final String? id;
   final String type;
   final bool enabled;
 
   AudioEffectSetEnabledRequest({
+    this.id,
     required this.type,
     required this.enabled,
   });
 
   Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
         'type': type,
         'enabled': enabled,
       };
@@ -1210,6 +1346,161 @@ class AudioEffectSetEnabledResponse {
       AudioEffectSetEnabledResponse();
 }
 
+/// Information communicated to the platform implementation when setting the
+/// delay time on the delay audio effect.
+class DarwinDelaySetDelayTimeRequest {
+  final String id;
+
+  /// The target delay time.
+  final double targetDelayTime;
+
+  DarwinDelaySetDelayTimeRequest({
+    required this.id,
+    required this.targetDelayTime,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'targetDelayTime': targetDelayTime,
+      };
+}
+
+class DarwinDelaySetFeedbackRequest {
+  final String id;
+
+  /// The target feedback.
+  final double feedback;
+
+  DarwinDelaySetFeedbackRequest({
+    required this.id,
+    required this.feedback,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'feedback': feedback,
+      };
+}
+
+class DarwinDelaySetLowPassCutoffRequest {
+  final String id;
+
+  /// The target lowPassCutoff.
+  final double lowPassCutoff;
+
+  DarwinDelaySetLowPassCutoffRequest({
+    required this.id,
+    required this.lowPassCutoff,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'lowPassCutoff': lowPassCutoff,
+      };
+}
+
+class DarwinDelaySetWetDryMixRequest {
+  final String id;
+
+  /// The target wet dry mix.
+  final double wetDryMix;
+
+  DarwinDelaySetWetDryMixRequest({
+    required this.id,
+    required this.wetDryMix,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'wetDryMix': wetDryMix,
+      };
+}
+
+class DarwinReverbSetPresetRequest {
+  final String id;
+
+  /// The target reverb preset.
+  final DarwinReverbPreset preset;
+
+  DarwinReverbSetPresetRequest({
+    required this.id,
+    required this.preset,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'preset': preset.index,
+      };
+}
+
+class DarwinReverbSetWetDryMixRequest {
+  final String id;
+
+  /// The target wet dry mix.
+  final double wetDryMix;
+
+  DarwinReverbSetWetDryMixRequest({
+    required this.id,
+    required this.wetDryMix,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'wetDryMix': wetDryMix,
+      };
+}
+
+class DarwinDistortionSetPreGainRequest {
+  final String id;
+
+  /// The target pre-gain.
+  final double preGain;
+
+  DarwinDistortionSetPreGainRequest({
+    required this.id,
+    required this.preGain,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'preGain': preGain,
+      };
+}
+
+class DarwinDistortionSetWetDryMixRequest {
+  final String id;
+
+  /// The target wet dry mix.
+  final double wetDryMix;
+
+  DarwinDistortionSetWetDryMixRequest({
+    required this.id,
+    required this.wetDryMix,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'wetDryMix': wetDryMix,
+      };
+}
+
+class DarwinDistortionSetPresetRequest {
+  final String id;
+
+  /// The target preset.
+  final DarwinDistortionPreset preset;
+
+  DarwinDistortionSetPresetRequest({
+    required this.id,
+    required this.preset,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'preset': preset.index,
+      };
+}
+
 /// Information communicated to the platform implementation when setting the
 /// target gain on the loudness enhancer audio effect.
 class AndroidLoudnessEnhancerSetTargetGainRequest {
@@ -1283,6 +1574,43 @@ class AndroidEqualizerBandSetGainResponse {
       AndroidEqualizerBandSetGainResponse();
 }
 
+/// Information communicated to the platform implementation when setting the
+/// gain for an equalizer band.
+class DarwinEqualizerBandSetGainRequest {
+  final int bandIndex;
+  final double gain;
+
+  DarwinEqualizerBandSetGainRequest({
+    required this.bandIndex,
+    required this.gain,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'bandIndex': bandIndex,
+        'gain': gain,
+      };
+}
+
+/// Information returned by the platform implementation after setting the gain
+/// for an equalizer band.
+class DarwinEqualizerBandSetGainResponse {
+  DarwinEqualizerBandSetGainResponse();
+
+  static DarwinEqualizerBandSetGainResponse fromMap(
+          Map<dynamic, dynamic> map) =>
+      DarwinEqualizerBandSetGainResponse();
+}
+
+class DarwinWriteOutputToFileResponse {
+  final String outputFileFullPath;
+
+  DarwinWriteOutputToFileResponse({required this.outputFileFullPath});
+
+  static DarwinWriteOutputToFileResponse fromMap(Map<dynamic, dynamic> map) =>
+      DarwinWriteOutputToFileResponse(
+          outputFileFullPath: map["outputFileFullPath"] as String);
+}
+
 /// Information about an audio effect to be communicated with the platform
 /// implementation.
 abstract class AudioEffectMessage {
@@ -1293,6 +1621,126 @@ abstract class AudioEffectMessage {
   Map<dynamic, dynamic> toMap();
 }
 
+abstract class DarwinAudioEffectMessage extends AudioEffectMessage {
+  final String id;
+
+  DarwinAudioEffectMessage({required this.id, required bool enabled})
+      : super(enabled: enabled);
+}
+
+class DarwinDelayMessage extends DarwinAudioEffectMessage {
+  final double delayTime;
+  final double feedback;
+  final double lowPassCutoff;
+  final double wetDryMix;
+
+  DarwinDelayMessage({
+    required String id,
+    required bool enabled,
+    required this.delayTime,
+    required this.feedback,
+    required this.lowPassCutoff,
+    required this.wetDryMix,
+  }) : super(id: id, enabled: enabled);
+
+  @override
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'type': 'DarwinDelay',
+        'enabled': enabled,
+        'delayTime': delayTime,
+        'feedback': feedback,
+        'lowPassCutoff': lowPassCutoff,
+        'wetDryMix': wetDryMix,
+      };
+}
+
+enum DarwinReverbPreset {
+  smallRoom,
+  mediumRoom,
+  largeRoom,
+  mediumHall,
+  largeHall,
+  plate,
+  mediumChamber,
+  largeChamber,
+  cathedral,
+  largeRoom2,
+  mediumHall2,
+  mediumHall3,
+  largeHall2,
+}
+
+class DarwinReverbMessage extends DarwinAudioEffectMessage {
+  final double wetDryMix;
+  final DarwinReverbPreset? preset;
+
+  DarwinReverbMessage({
+    required bool enabled,
+    required String id,
+    required this.wetDryMix,
+    this.preset,
+  }) : super(enabled: enabled, id: id);
+
+  @override
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'type': 'DarwinReverb',
+        'enabled': enabled,
+        'wetDryMix': wetDryMix,
+        'preset': preset?.index
+      };
+}
+
+enum DarwinDistortionPreset {
+  drumsBitBrush,
+  drumsBufferBeats,
+  drumsLoFi,
+  multiBrokenSpeaker,
+  multiCellphoneConcert,
+  multiDecimated1,
+  multiDecimated2,
+  multiDecimated3,
+  multiDecimated4,
+  multiDistortedFunk,
+  multiDistortedCubed,
+  multiDistortedSquared,
+  multiEcho1,
+  multiEcho2,
+  multiEchoTight1,
+  multiEchoTight2,
+  multiEverythingIsBroken,
+  speechAlienChatter,
+  speechCosmicInterference,
+  speechGoldenPi,
+  speechRadioTower,
+  speechWaves
+}
+
+class DarwinDistortionMessage extends DarwinAudioEffectMessage {
+  final double preGain;
+  final double wetDryMix;
+  final DarwinDistortionPreset? preset;
+
+  DarwinDistortionMessage({
+    required String id,
+    required bool enabled,
+    required this.preGain,
+    required this.wetDryMix,
+    this.preset,
+  }) : super(id: id, enabled: enabled);
+
+  @override
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'id': id,
+        'type': 'DarwinDistortion',
+        'enabled': enabled,
+        'preGain': preGain,
+        'wetDryMix': wetDryMix,
+        'preset': preset?.index
+      };
+}
+
 /// Information about a loudness enhancer to be communicated with the platform
 /// implementation.
 class AndroidLoudnessEnhancerMessage extends AudioEffectMessage {
@@ -1402,3 +1850,179 @@ class AndroidEqualizerMessage extends AudioEffectMessage {
         'parameters': parameters?.toMap(),
       };
 }
+
+abstract class DarwinAudioEffectState {
+  final String id;
+  final bool enable;
+
+  DarwinAudioEffectState({
+    required this.id,
+    required this.enable,
+  });
+
+  static DarwinAudioEffectState fromMap(Map<dynamic, dynamic> map) {
+    final type = map["type"] as String;
+
+    if (type == "DarwinReverb") {
+      return DarwinAudioEffectReverbState.fromMap(map);
+    } else if (type == "DarwinDistortion") {
+      return DarwinAudioEffectDistortionState.fromMap(map);
+    } else if (type == "DarwinDelay") {
+      return DarwinAudioEffectDelayState.fromMap(map);
+    }
+
+    throw ArgumentError(["Unknown effect type $type"]);
+  }
+}
+
+class DarwinAudioEffectReverbState extends DarwinAudioEffectState {
+  final double wetDryMix;
+  final DarwinReverbPreset preset;
+
+  DarwinAudioEffectReverbState({
+    required String id,
+    required bool enable,
+    required this.wetDryMix,
+    required this.preset,
+  }) : super(id: id, enable: enable);
+
+  static DarwinAudioEffectReverbState fromMap(Map<dynamic, dynamic> map) {
+    return DarwinAudioEffectReverbState(
+      id: map["id"] as String,
+      enable: map["enable"] as bool,
+      wetDryMix: map["wetDryMix"] as double,
+      preset: DarwinReverbPreset.values[(map["preset"] as int)],
+    );
+  }
+}
+
+class DarwinAudioEffectDelayState extends DarwinAudioEffectState {
+  final double wetDryMix;
+  final double lowPassCutoff;
+  final double feedback;
+  final double delayTime;
+
+  DarwinAudioEffectDelayState({
+    required String id,
+    required bool enable,
+    required this.wetDryMix,
+    required this.lowPassCutoff,
+    required this.feedback,
+    required this.delayTime,
+  }) : super(id: id, enable: enable);
+
+  static DarwinAudioEffectDelayState fromMap(Map<dynamic, dynamic> map) {
+    return DarwinAudioEffectDelayState(
+      id: map["id"] as String,
+      enable: map["enable"] as bool,
+      wetDryMix: map["wetDryMix"] as double,
+      lowPassCutoff: map["lowPassCutoff"] as double,
+      feedback: map["feedback"] as double,
+      delayTime: map["delayTime"] as double,
+    );
+  }
+}
+
+class DarwinAudioEffectDistortionState extends DarwinAudioEffectState {
+  final double wetDryMix;
+  final double preGain;
+  final DarwinDistortionPreset preset;
+
+  DarwinAudioEffectDistortionState({
+    required String id,
+    required bool enable,
+    required this.wetDryMix,
+    required this.preGain,
+    required this.preset,
+  }) : super(id: id, enable: enable);
+
+  static DarwinAudioEffectDistortionState fromMap(Map<dynamic, dynamic> map) {
+    return DarwinAudioEffectDistortionState(
+      id: map["id"] as String,
+      enable: map["enable"] as bool,
+      wetDryMix: map["wetDryMix"] as double,
+      preGain: map["preGain"] as double,
+      preset: DarwinDistortionPreset.values[(map["preset"] as int)],
+    );
+  }
+}
+
+/// Information about the equalizer parameters to be communicated with the
+/// platform implementation.
+class DarwinEqualizerParametersMessage {
+  final double minDecibels;
+  final double maxDecibels;
+  final List<DarwinEqualizerBandMessage> bands;
+
+  DarwinEqualizerParametersMessage({
+    required this.minDecibels,
+    required this.maxDecibels,
+    required this.bands,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'minDecibels': minDecibels,
+        'maxDecibels': maxDecibels,
+        'bands': bands.map((band) => band.toMap()).toList(),
+      };
+
+  static DarwinEqualizerParametersMessage fromMap(Map<dynamic, dynamic> map) =>
+      DarwinEqualizerParametersMessage(
+        minDecibels: map['minDecibels'] as double,
+        maxDecibels: map['maxDecibels'] as double,
+        bands: (map['bands'] as List<dynamic>)
+            .map((dynamic bandMap) => DarwinEqualizerBandMessage.fromMap(
+                bandMap as Map<dynamic, dynamic>))
+            .toList(),
+      );
+}
+
+/// Information about the equalizer to be communicated with the platform
+/// implementation.
+class DarwinEqualizerMessage extends AudioEffectMessage {
+  final DarwinEqualizerParametersMessage parameters;
+
+  DarwinEqualizerMessage({
+    required bool enabled,
+    required this.parameters,
+  }) : super(enabled: enabled);
+
+  @override
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'type': 'DarwinEqualizer',
+        'enabled': enabled,
+        'parameters': parameters.toMap(),
+      };
+}
+
+/// Information about an equalizer band to be communicated with the platform
+/// implementation.
+class DarwinEqualizerBandMessage {
+  /// A zero-based index of the position of this band within its [DarwinEqualizer].
+  final int index;
+
+  /// The center frequency of this band in hertz.
+  final double centerFrequency;
+
+  /// The gain for this band in decibels.
+  final double gain;
+
+  DarwinEqualizerBandMessage({
+    required this.index,
+    required this.centerFrequency,
+    required this.gain,
+  });
+
+  Map<dynamic, dynamic> toMap() => <dynamic, dynamic>{
+        'index': index,
+        'centerFrequency': centerFrequency,
+        'gain': gain,
+      };
+
+  static DarwinEqualizerBandMessage fromMap(Map<dynamic, dynamic> map) =>
+      DarwinEqualizerBandMessage(
+        index: map['index'] as int,
+        centerFrequency: map['centerFrequency'] as double,
+        gain: map['gain'] as double,
+      );
+}
diff --git a/just_audio_platform_interface/lib/method_channel_just_audio.dart b/just_audio_platform_interface/lib/method_channel_just_audio.dart
index 24daadd21..ea1e965bd 100644
--- a/just_audio_platform_interface/lib/method_channel_just_audio.dart
+++ b/just_audio_platform_interface/lib/method_channel_just_audio.dart
@@ -8,6 +8,20 @@ import 'just_audio_platform_interface.dart';
 class MethodChannelJustAudio extends JustAudioPlatform {
   static const _mainChannel = MethodChannel('com.ryanheise.just_audio.methods');
 
+  MethodChannelJustAudio() {
+    errorsStream.listen((exception) => throw exception);
+  }
+
+  Stream<PlatformException> get errorsStream =>
+      const EventChannel('com.ryanheise.just_audio.errors')
+          .receiveBroadcastStream()
+          .cast<Map<dynamic, dynamic>>()
+          .map((map) => PlatformException(
+                code: map['code'] as String,
+                message: map['message'] as String?,
+                details: map['details'] as String?,
+              ));
+
   @override
   Future<AudioPlayerPlatform> init(InitRequest request) async {
     await _mainChannel.invokeMethod<void>('init', request.toMap());
@@ -200,12 +214,66 @@ class MethodChannelAudioPlayer extends AudioPlayerPlatform {
   }
 
   @override
-  Future<AndroidLoudnessEnhancerSetTargetGainResponse>
-      androidLoudnessEnhancerSetTargetGain(
-          AndroidLoudnessEnhancerSetTargetGainRequest request) async {
-    return AndroidLoudnessEnhancerSetTargetGainResponse.fromMap(
-        (await _channel.invokeMethod<Map<dynamic, dynamic>>(
-            'androidLoudnessEnhancerSetTargetGain', request.toMap()))!);
+  Future<void> darwinDelaySetTargetDelayTime(
+      DarwinDelaySetDelayTimeRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDelaySetTargetDelayTime', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDelaySetTargetFeedback(
+      DarwinDelaySetFeedbackRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDelaySetTargetFeedback', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDelaySetLowPassCutoff(
+      DarwinDelaySetLowPassCutoffRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDelaySetLowPassCutoff', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDelaySetWetDryMix(
+      DarwinDelaySetWetDryMixRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDelaySetWetDryMix', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDistortionSetWetDryMix(
+      DarwinDistortionSetWetDryMixRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDistortionSetWetDryMix', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDistortionSetPreGain(
+      DarwinDistortionSetPreGainRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDistortionSetPreGain', request.toMap());
+  }
+
+  @override
+  Future<void> darwinDistortionSetPreset(
+      DarwinDistortionSetPresetRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinDistortionSetPreset', request.toMap());
+  }
+
+  @override
+  Future<void> darwinReverbSetPreset(
+      DarwinReverbSetPresetRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinReverbSetPreset', request.toMap());
+  }
+
+  @override
+  Future<void> darwinReverbSetWetDryMix(
+      DarwinReverbSetWetDryMixRequest request) async {
+    await _channel.invokeMethod<Map<dynamic, dynamic>>(
+        'darwinReverbSetWetDryMix', request.toMap());
   }
 
   @override
@@ -216,6 +284,15 @@ class MethodChannelAudioPlayer extends AudioPlayerPlatform {
             'androidEqualizerGetParameters', request.toMap()))!);
   }
 
+  @override
+  Future<AndroidLoudnessEnhancerSetTargetGainResponse>
+      androidLoudnessEnhancerSetTargetGain(
+          AndroidLoudnessEnhancerSetTargetGainRequest request) async {
+    return AndroidLoudnessEnhancerSetTargetGainResponse.fromMap(
+        (await _channel.invokeMethod<Map<dynamic, dynamic>>(
+            'androidLoudnessEnhancerSetTargetGain', request.toMap()))!);
+  }
+
   @override
   Future<AndroidEqualizerBandSetGainResponse> androidEqualizerBandSetGain(
       AndroidEqualizerBandSetGainRequest request) async {
@@ -223,4 +300,23 @@ class MethodChannelAudioPlayer extends AudioPlayerPlatform {
         (await _channel.invokeMethod<Map<dynamic, dynamic>>(
             'androidEqualizerBandSetGain', request.toMap()))!);
   }
+
+  @override
+  Future<DarwinEqualizerBandSetGainResponse> darwinEqualizerBandSetGain(
+      DarwinEqualizerBandSetGainRequest request) async {
+    return DarwinEqualizerBandSetGainResponse.fromMap(
+        (await _channel.invokeMethod<Map<dynamic, dynamic>>(
+            'darwinEqualizerBandSetGain', request.toMap()))!);
+  }
+
+  @override
+  Future<DarwinWriteOutputToFileResponse> darwinWriteOutputToFile() async {
+    return DarwinWriteOutputToFileResponse.fromMap(
+        (await _channel.invokeMethod('darwinWriteOutputToFile'))!);
+  }
+
+  @override
+  Future<void> darwinStopWriteOutputToFile() async {
+    await _channel.invokeMethod<void>('darwinStopWriteOutputToFile', null);
+  }
 }
diff --git a/just_audio_web/lib/just_audio_web.dart b/just_audio_web/lib/just_audio_web.dart
index b15e84081..c2797862e 100644
--- a/just_audio_web/lib/just_audio_web.dart
+++ b/just_audio_web/lib/just_audio_web.dart
@@ -16,6 +16,9 @@ class JustAudioPlugin extends JustAudioPlatform {
     JustAudioPlatform.instance = JustAudioPlugin();
   }
 
+  @override
+  Stream<PlatformException> get errorsStream => const Stream.empty();
+
   @override
   Future<AudioPlayerPlatform> init(InitRequest request) async {
     if (players.containsKey(request.id)) {
diff --git a/just_audio_web/pubspec.yaml b/just_audio_web/pubspec.yaml
index 0c5cd2dec..15b3677ca 100644
--- a/just_audio_web/pubspec.yaml
+++ b/just_audio_web/pubspec.yaml
@@ -3,17 +3,17 @@ description: Web platform implementation of just_audio. This implementation is e
 homepage: https://github.com/ryanheise/just_audio/tree/master/just_audio_web
 version: 0.4.7
 
-flutter:
-  plugin:
-    platforms:
-      web:
-        pluginClass: JustAudioPlugin
-        fileName: just_audio_web.dart
+environment:
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=1.12.13+hotfix.5"
 
 dependencies:
-  just_audio_platform_interface: ^4.2.0
-  # just_audio_platform_interface:
-  #   path: ../just_audio_platform_interface
+#  just_audio_platform_interface: ^4.2.0
+  just_audio_platform_interface:
+    git:
+      url: https://github.com/Kuama-IT/just_audio.git
+      ref: swift_implementation
+      path: just_audio_platform_interface
   flutter:
     sdk: flutter
   flutter_web_plugins:
@@ -22,6 +22,14 @@ dependencies:
 dev_dependencies:
   flutter_lints: ^2.0.1
 
-environment:
-  sdk: ">=2.12.0 <3.0.0"
-  flutter: ">=1.12.13+hotfix.5"
+# Uncomment when testing platform interface changes.
+dependency_overrides:
+  just_audio_platform_interface:
+    path: ../just_audio_platform_interface
+
+flutter:
+  plugin:
+    platforms:
+      web:
+        pluginClass: JustAudioPlugin
+        fileName: just_audio_web.dart
diff --git a/tools/cli/.gitignore b/tools/cli/.gitignore
new file mode 100644
index 000000000..3c8a15727
--- /dev/null
+++ b/tools/cli/.gitignore
@@ -0,0 +1,6 @@
+# Files and directories created by pub.
+.dart_tool/
+.packages
+
+# Conventional directory for build output.
+build/
diff --git a/tools/cli/README.md b/tools/cli/README.md
new file mode 100644
index 000000000..a96565206
--- /dev/null
+++ b/tools/cli/README.md
@@ -0,0 +1,24 @@
+# Development tools
+
+### Swift development
+
+**Problem**
+
+Native `macos` and `ios` projects share most of the code. Sadly, CocoaPods does not allow to
+reference files outside of the root project directory, or to symlink `.swift` files.
+
+This would force us to duplicate the code between `macos` and `ios` implementations with cut &
+paste.
+
+**Solution**
+
+A simple script that watches a source folder (say `darwin`) and copies the files to the correct
+folder. Of course this means that most of future ios/macos developments will need to happen inside
+the source folder.
+
+**How to**
+Launch the script inside `tools/cli/lib`. Say you are in the root of the repository it would be
+
+```bash
+dart run ./tools/cli/lib/sync_darwin_folder.dart
+```
\ No newline at end of file
diff --git a/tools/cli/analysis_options.yaml b/tools/cli/analysis_options.yaml
new file mode 100644
index 000000000..907bec2ad
--- /dev/null
+++ b/tools/cli/analysis_options.yaml
@@ -0,0 +1,11 @@
+include: package:lints/recommended.yaml
+
+analyzer:
+  strong-mode:
+    implicit-casts: false
+    implicit-dynamic: false
+
+linter:
+  rules:
+    prefer_single_quotes: false
+    unawaited_futures: false
diff --git a/tools/cli/lib/sync_darwin_folder.dart b/tools/cli/lib/sync_darwin_folder.dart
new file mode 100644
index 000000000..99bd1ad2e
--- /dev/null
+++ b/tools/cli/lib/sync_darwin_folder.dart
@@ -0,0 +1,64 @@
+import 'dart:core';
+import 'dart:io';
+
+import "package:path/path.dart" show dirname;
+import 'package:watcher/watcher.dart';
+
+void main(List<String> arguments) {
+  watch(
+    sourceFolder: "just_audio/darwin",
+    destinationFolders: [
+      "just_audio/macos",
+      "just_audio/ios",
+    ],
+  );
+}
+
+/// Watches files changes (add, modify and remove) inside the [sourceFolder], and aligns accordingly
+/// the [destinationFolders] files. Both [sourceFolder] and [destinationFolders] are supposed to be relative paths to the directory you want to operate with.
+///
+/// Throws a [FileSystemException] if [sourceFolder] does not exist.
+void watch({
+  required String sourceFolder,
+  required List<String> destinationFolders,
+}) {
+  final currentDir = dirname(Platform.script.path).dropLastSlash();
+  final baseDir = "$currentDir/../../..";
+  final destinationDirs = destinationFolders.map((it) {
+    return "$baseDir/${it.dropLastSlash()}";
+  });
+  final watcher = DirectoryWatcher("$baseDir/$sourceFolder");
+
+  watcher.events.listen((event) {
+    final partialPath = event.path.replaceAll("$baseDir/$sourceFolder", "");
+
+    print("Updating $partialPath");
+
+    switch (event.type) {
+      case ChangeType.ADD:
+      case ChangeType.MODIFY:
+        final file = File(event.path);
+        for (final destination in destinationDirs) {
+          file.copySync("$destination$partialPath");
+        }
+        break;
+      case ChangeType.REMOVE:
+        for (var element in destinationDirs) {
+          final file = File("$element$partialPath");
+          file.deleteSync(recursive: file is Directory);
+        }
+    }
+  });
+
+  print("🫣 Watching files 🫣");
+}
+
+extension StringPathClean on String {
+  String dropLastSlash() {
+    if (endsWith("/")) {
+      return substring(0, length - 1);
+    }
+
+    return this;
+  }
+}
diff --git a/tools/cli/pubspec.yaml b/tools/cli/pubspec.yaml
new file mode 100644
index 000000000..57666b08a
--- /dev/null
+++ b/tools/cli/pubspec.yaml
@@ -0,0 +1,13 @@
+name: cli
+description: Just Audio development utilities
+version: 0.1.0
+
+environment:
+  sdk: '>=2.17.0 <3.0.0'
+
+dependencies:
+  path: ^1.8.2
+  watcher: ^1.0.1
+
+dev_dependencies:
+  lints: ^2.0.0