You can use ALL the editors, you just can’t include ANY of the sfx/gfx data in the cart directly - it all has to be part of your source code - which you’d have to decode and put back in the sfx data area at startup.
Yes, you can use the function - once you’ve put some data there - or else I assume the function would do nothing but be silent.
Plus, if you want simple ways of producing sounds/notes then, per the Tips section of the Jam page... PICO-8: - Play Audio - from a single beep to an entire series of notes. Picotron: - use note(pitch) each frame for cheap sfx.
