Here's a proof of concept video:
https://www.youtube....h?v=vKgSqG2Tbfc
And here's the main thread where the development is happening:
http://forums.qhimm....p?topic=16077.0
This will be playable on Higan v094, BSNES v075 (with the SPC fallback not working, so any songs that are missing or not replaced will be silent), and on an actual Super Nintendo using the SD2SNES flash cart. I've got it to the point it's playing our songs ingame, but there are a number of bugs to be ironed out that I'm working on. Still, it's promising
