I sniffed the USB communication between my Digitakt and the Audio Capture Tool in the standalone version of the OT software, and came up with a simple command line tool which captures all 12 audio streams to a 12 track .WAV file. It should compile on every OS where libusb and libsndfile is available for. Somebody could write a driver or JACK (linux sound server) adapter based on this, and you could have your magic single-outs adapter box (think raspberry pi plus USB sound interface with 8 to 12 channels out for starters)
https://github.com/droelfdroelf/dtdump
Mod Edit : Moved to a more appropriate category to avoid confusion as itâs not Elektron Software per se, nor really Overbridge in the strictest sense