got it working here. 2.17.11 beta (also out of date i think)
OS is 1.21 beta3 (i need to update)
running into app but i’m sure ableton is fine too.
usb - overbridge mode
rout to main - T1,T2,T3,T4 are red (off
chorus , delay , reverb are green (on)
send to fx , T1,T2,T3,T4 , chorus , delay - green (on).
chorus and delay may be the equivalent to the 2 x audio in’s (left and right) , i’m unsure as i havent tried them .
if you can setup digitakt its basically the same , go into audio routing , click some buttons to make the track ones red , fx ones green.
in the app , goto the cassette recorder page , and ensure monitoring is main only. (the switch should be green).
if you turn off main , and turn on T1 , youll hear dry audio.
quick demo.
quick recording , starts off as fx only then i just route tracks into the main while on the audio routing page.
recorded at +13db , a few audio glitches as my mac is soooo sloooowwww…