hey does anyone have this problem:
you play joint assault, works perfectly fine
the bgm doesn't work, and neither does the audio for the voice of burford and others
This happened to me several times. (the voices go out, but I don't remember the music going out)
I think it's a glitch and I think it may be related to sleep mode. (if you use sleep mode too many times or at a bad time during the game)
Restarting the game (or the PSP) makes things back to normal.