Yep, that's a limitation which i can't really fix, but can alleviate a little, at least. The music is pure wav samples, so when there is more DMA going on (on bosses, for instance) - it will go a little slower.
I'd LOVE to get the original midi tracks and convert to FM. Too much work for me to do that by ear though!
OK, that should have saved, yes. That was on real hardware? Real hardware is such a pain, haha.