Nice job. Feels like there's a bit of misunderstanding of what this project is. It has nothing to do with audio - it's purely a means of mapping MIDI to shell commands.

There was (still is) a very popular program called BOME Midi Translator that did something similar - think of it like AutoHotKey but specifically for midi.

Back when I made heavy use of Kontakt libraries I got frustrated at the lack of an easy way to audition the patches (of which there could be hundreds on a single sampler). To get around it, I created a Bome script so when I pressed an unused button on my midi controller it would trigger a mouse click to advance to the next patch in my DAW and then send a note-on / note-off for C4 for half a second.

Made previewing the sounds much easier.