Psx2psp Base.pbp Review

It sounds like you're encountering a common hurdle when trying to use

(background music) to personalize how the game looks on your PSP. Multi-Disc Support : Load multiple psx2psp base.pbp

Legacy and impact

Advanced: Creating Your Own base.pbp (For Developers)

For the technically inclined, you are not locked into the default base.pbp. You can generate a custom template using Sony’s official popstation.exe (the command-line tool from the PS3 SDK). It sounds like you're encountering a common hurdle