this is what reads out in the terminal

cat ./conf/audio.txt: 0 3 devices

1. Apple Inc.: Built-in Input (def. in) ch.: 0 out; 2 in; 0 duplex. rates: 44100; 48000; 88200; 96000;
2. Apple Inc.: Built-in Output (def. out) ch.: 2 out; 0 in; 0 duplex. rates: 44100; 48000; 88200; 96000;
3. OmniVision Technologies, Inc.: USB Camera-B4.04.27.1 ch.: 0 out; 4 in; 0 duplex. rates: 16000; 2 selected sample rate: 44100 audio card seems to be mono: not supported.

terminate called after throwing an instance of 'RtError' what(): RtApi:: a stream is not open! /Applications/d-touch_drum_machine/d-touch_drum_machine: line 10: 173 Abort trap ./ADTDrumMachine logout

[Process completed]

sound card is stereo for sure, its a new mac mini

can you try now with the new version of the drum machine please?