Fixed the following:
If more bytes are read, adjust value to cause thread to exit in SinkPlayer.
Android Sink stays muted when changing tracks.
Android Source continues playback when adding new sink.
Android Source device removes from Sink list when removed if lost.
Android Source can play song once completed.
WS fix.

Change-Id: I6fd30a37ee875efb8ec53c1b33b049b75a0cc045