Speed up MP3Extractor using cached reads
Speed up MP3Extractor using cached reads

Change-Id: I53a5ed76bc2f76f0c184f3800b5448f677117ae3

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