[ Help...!! No BGM when playing D012FF. ]

[RyZhoua]

[ Help...!! I'm new to JPCSP and this forum. I want to ask for a help (but I dunno if someone already posted about this problem):
When I'm playing D012FF, there is no BGM played at the battle (but the SFXs are still played). I don't care about the low FPS rate (well, I do care, sometimes). I haven't installed SonicStage and Media Engine. Are they vital components for JPCSP? This is the first time I'm playing this game. ]