Interval ID to track new Song

[ericDMH]

For the implementation of client side DRM features (skip preservation when "killing" the app), it would be nice to be able if a news track "interval" has started. Maybe we could us a simple date stamp or integer that will be embedded into the track. The value would change everytime a new interval is launched.

When the app is restarted it would compare whether a new interval has launched or the last interval is still active (in that case skipping would be disabled until the interval has finished).

[sebastian-weiss]

Do we need this any more? I think this corresponds to limited number of swaps?