- https://github.com/mixxxdj/mixxx/wiki
- https://github.com/mixxxdj/mixxx/wiki/Components%20JS
- https://github.com/mixxxdj/mixxx/wiki/midi%20scripting
- https://github.com/mixxxdj/mixxx/wiki/MIDI%20crash%20course
- https://github.com/mixxxdj/mixxx/wiki/Reverse%20Engineering
- https://www.youtube.com/watch?v=QUT8tZmwM00
- https://bugs.launchpad.net/mixxx/+bug/706046
- https://github.com/mixxxdj/mixxx/blob/main/res/controllers/Hercules-DJ-Control-AIR-scripts.js
- https://github.com/mixxxdj/mixxx/blob/main/res/controllers/Hercules%20DJ%20Control%20AIR.midi.xml
https://ts.hercules.com/download/sound/manuals/DJ_AIR/DJUCED/DJUCED_Manual_v1_ENG.pdf
page 48 and so on