Try to load the vanilla game with retroarch, record a video.
Do the same video for the patched version in canoe.
That way we'll know for sure.
I compared it to snes9x on my PC and I didn't find any difference, and I'm actually familiar with Plok's music because even though I think the game kinda of sucks, the music is AWESOME. But then again, one of my speakers is effed up, so if something is sounding bad, my speaker might not be even reproducing it.