code: function objectIsMusicTrack(obj) {
      if ((obj.Name || obj.Artist)
          && !obj['Playlist ID']
          && (obj.Kind ==
              ('MPEG audio file'
                  || 'AAC audio file'
                  || 'Matched AAC audio file'
                  || 'Protected AAC audio file'
                  || 'Purchased AAC audio file')))
          return true;
      else
          return false;
  }
docs: Ensures we have a music track and not a video or other non-music item.
  
  @param  Object
  @return Boolean