So AFAIK not all cores support MIDI at the moment. This isn’t always an issue, but if I recall correctly most RPG Maker games run almost exclusively .mid for music.
Admittedly I have been known to fumble the ball when it comes to setting MIDI up for the cores that do support it, so I am not ruling out that this is a fault of my own - basically, I can’t hear anything playing RPG Maker 2000 games.
Does this work for anyone else? If so, please let me know.