Once in headless mode, I would need to use the shell terminal to access the source code of Dexed that pertains to midi. I need to write a script that looks for any midi controllers plugged into the pi and connects to them automatically. This would allow any midi controller to be used when plugged in.

Next I need to access the Dexed source code that pertains to switching presets. The presets would be accessed and switched through the button or rotary encoder knob that would be wired to the pi.

These steps can be repeatable across any open source VSTs.