Anyone interested in this sort of thing should check out mididings,[1] a python package with which you can intercept MIDI messages and use them however you like.

I've used it in combination with visgrep from the xautomation package[2] to locate and click on non-MIDI-learnable GUI buttons on a software synth, but it can be anything.

I've also used mididings to control mpv[3], allowing me to pause, play, rewind and fast-forward videos with my feet using my MIDI foot pedal controller[4] while with my hands I type up a transcript of what's being said in the video.

[1] - http://das.nasophon.de/mididings/

[2] - https://hoopajoo.net/projects/xautomation.html

[3] - https://mpv.io/

[4] - https://www.behringer.com/Categories/Behringer/Accessories/M...