I'm guessing either of those lines edits the voice groups? Since some/the(I haven't tested them all) songs have some wrong sounds in them.
EDIT: Some songs are using a different soundbank, it seems. That's why they sound off. This is proven by the fact that Jotho Wild, Trainer and Leader all sound like they should, they're on soundbank 1 according to VGM trans. So you'd have to find a way to change the bank number for the other songs...