Unknow error when play audio with media player in android

view story

http://stackoverflow.com – In my app, i have to play the songs from external storage. It work fine , but some time media player stop without error log or warning. Here is my logcat appear when this happening: 04-11 22:39:16.320: D/dalvikvm(16048): threadid=10: interp stack at 0x4bf6e000 04-11 22:39:16.326: D/jdwp(16048): sendBufferedRequest : len=0x3B 04-11 22:39:16.436: D/dalvikvm(16048): threadid=11: interp stack at 0x4bfa8000 04-11 22:39:16.436: D/dalvikvm(16048): threadid=11: calling run() 04-11 22:39:16.437: D/dalvikvm(16048): threadid=12: interp stack at 0x4bfb0000 04-11 22:39:16.437: D/dalvikvm(16048): thre (HowTos)