Add sound hacks menu
For some sound issue hacks. Currently, I add two hacks
1. Mp3 Sample Rate fixed to 44100Hz ( fixing fast voice issue)
2. Fix mp3 loop issues (fixing Miku custom mp3 playing issue, and lost last voice issue)
Provide some sound hacks seem necessary since we have many issues hard to fix and can not working both with previous settings simultaneously.
Merge branch 'sceMp3_fix' into master_0.9.8