I actually tried other versions (the ones included with GBAmusriperGUI didn't work), and I can confirm it doesn't use the Sappy engine.
At this point, it'd be best to use VGMTrans to get the samples, and then use Polyphone.
(If you want, I can make it myself)
EDIT: VGMTrans was just getting garbage noises, so that's no use.
At this point, it'd be best to use VGMTrans to get the samples, and then use Polyphone.
(If you want, I can make it myself)
EDIT: VGMTrans was just getting garbage noises, so that's no use.