@chapelierfou
First thanks for answering promptly 
If you use ableton autofocus is a great feature, I assure youâŚI do entire songs with one monome and 4 or 5 apps.
Regarding sync, my experience is that you will need to realy be tight to the ableton clock and I reckon plugsync might do the job.
I will try to modify it myselfâŚmy only thought is that in this way we will lose the groove.
Anyway I had a lot of fun yesterday!!!