am dcf872dc: am c34c8c3f: Merge "Only send the playback complete notification if a) an error occurred on any track or b) all tracks have finished playing. The previous behaviour was to send the notification as soon as the first track finished playing." into gingerbrea

Merge commit 'dcf872dcfa6439514c886f8b9bf997beeeb3be85'

* commit 'dcf872dcfa6439514c886f8b9bf997beeeb3be85':
  Only send the playback complete notification if a) an error occurred on any track or b) all tracks have finished playing. The previous behaviour was to send the notification as soon as the first track finished playing.