Yeah, I was using the Sound Restoration hack for the GBA version, that's the one that runs badlyChange or abandon your romhacks. Vanilla plays fine on gPSP w/dynarec, some romhacks have issues.
Ah no, the SNES version has it's own problems, the audio is sliiiiightly delayed. You'll notice if you play the battle theme on youtube at the same time a battle starts in the game on the Vita.Should have specified Super NES/famicom version, unpatched.