Hey, thanks. Kind of obsessed over that demo for too long.

The Rust engine underneath isn't even Pi-locked. It'll run on macOS/Linux, but the touch UI and USB-audio bridge is device specific so it would be fairly useless.

You might be over-indexing on "build this". It's actually just slapping a few 1-click shopping parts together and running two commands in your shell to have a playable instrument.

I've got a vague idea to maybe pull the FM engine out some day since I love having a DX-style synth that actually has a filter, but my plugin work is generally focused on effects processing and not voicing, so I dunno...