Hey @zep, not sure if this is a bug or intended, but I just realized that, in a fresh cart, sfx 0 is speed 1, while all other sfx are speed 16.

Is there some reason for this?

Seems like this is something that might lead to confusion at times. The user will probably figure out what's different pretty quickly, but still... I thought I should at least put it on your radar as a possible mistake.

As an aside, "Speed" really isn't the right term here. It should be "(note) duration", or something similar. I dunno, I don't have an audio background so there's probably a more concise term.