Ok, I followed this guide with great success to port AmiKit to FS-UAE:https://espenskogblog.wordpress.com/2019/05/13/amikit-xe-on-fs-uae/
But I haven't had much luck with AHI and the UAE Sound option giving me no sound at all.
I've had to activate the Toccata sound-card in FS-UAE - but got no sound at all.
After much try and error I downloaded the Toccata drivers from here:http://amiga.resource.cx/exp/toccata
Nothing changed - no sound.
More investigation leads me to this thread:http://eab.abime.net/showthread.php?t=76761
And there is a hint that an old Toccata library (v12) could do the job:http://eab.abime.net/showpost.php?p=994619&postcount=11
I just download the archive and copied the library to libs: and restarted AmiKit.
And now I can listen to great Amiga mods without any distortion running in FS-UAE on a MacBook Pro M1.