Attempting to get Jojo's Bizarre Adventure: All-Star Battle to work

That's because cellMusicSetVolume2 is not implemented. What happens if you LLE load libmusic?

I cannot find that exact plugin name. Would it be libsysutil_music.prx? I'm still sort of new to this.

UPDATE: Tried libaudio and now it always crashes with every renderer, every PPU, every SPU at the same spot as before with
"F {PPU[0x8000000d] Thread (CRI Server Manager) [0x00a34130]} struct vm::access_violation thrown: Access violation reading address 0x0"