Speed up playlist processing
Speed up playlist processing

When matching entries in playlists, only consider audio files.

b/6346786

Change-Id: Ia744d002c2821a81840303b9409593da48a08b73

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base