It start choppy in the middle of the BGM playback until next looping,then choppy again, the next next looping will be missing BGM.

sample:
http://www.youtube.com/watch?v=Q7Jlt58SDsQ

log:
32:07:613 user_main I[UTIL]: Dialog\PSPSaveDialog.cpp:67 sceUtilitySavedataInitStart(0969aea4) : Mode = 1
32:07:614 idle0 I[SCEGE]: GLES\Framebuffer.cpp:1620 Decimating FBO for 04178000 (480 x 272 x 3), age 6
32:07:619 user_main I[UTIL]: Dialog\SavedataParam.cpp:451 Saving file with size 133856 in ms0:/PSP/SAVEDATA/ULJM05287/DRACULA.BIN
32:07:628 user_main I[IO]: HLE\sceIo.cpp:842 stdout: ���̌�ǂݍ��݂��Ȃ����`�F�b�N!!!!!
�b�N!!32:07:629 user_main I[SCEGE]: GLES\Framebuffer.cpp:811 Creating FBO for 04178000 : 480 x 272 x 3
32:07:629 user_main W[SCEGE]: GLES\Framebuffer.cpp:831 FBO reusing depthbuffer, 04178000/00110000 and 00000000/00110000
32:07:638 ATRAC3 play I[ME]: HLE\sceAtrac.cpp:976 sceAtracReleaseAtracID(0)
32:07:638 ATRAC3 play I[ME]: HLE\sceAtrac.cpp:1275 0=sceAtracSetDataAndGetID(096de4c0, 00040000)
32:07:638 ATRAC3 play W[ME]: HLE\sceAtrac.cpp:1165 This is an atrac3+ stereo audio
32:07:639 ATRAC3 play E[ME]: HLE\sceAtrac.cpp:919 sceAtracGetSecondBufferInfo(0, 09efe760, 09efe75c)
32:17:774 ATRAC3 play I[ME]: HW\MediaEngine.cpp:79 FF: Invalid gain location: ch=0, sb=11, pos=1, val=0
32:17:774 ATRAC3 play E[ME]: HLE\sceAtrac.cpp:611 avcodec_decode_audio4: Error decoding audio -1094995529
32:17:774 ATRAC3 play I[ME]: HLE\sceAtrac.cpp:1275 1=sceAtracSetDataAndGetID(096de4c0, 00040000)
32:17:774 ATRAC3 play W[ME]: HLE\sceAtrac.cpp:1165 This is an atrac3+ stereo audio
32:17:775 ATRAC3 play E[ME]: HLE\sceAtrac.cpp:919 sceAtracGetSecondBufferInfo(1, 09efe760, 09efe75c)
32:47:005 ATRAC3 play I[ME]: HW\MediaEngine.cpp:79 FF: Invalid gain location: ch=0, sb=11, pos=1, val=0
32:47:005 ATRAC3 play E[ME]: HLE\sceAtrac.cpp:611 avcodec_decode_audio4: Error decoding audio -1094995529
32:47:005 ATRAC3 play I[ME]: HLE\sceAtrac.cpp:1230 sceAtracSetData(1, 096de4c0, 00040000)
32:47:005 ATRAC3 play W[ME]: HLE\sceAtrac.cpp:1165 This is an atrac3+ stereo audio