Thanks for the reply.
I was able to get things working very smoothly with that tutorial a year or so ago, but can't seem to get it work now and I'm completely baffled as to what the problem is (I've tried multiple times). Audiobus accepts my info.plist etc, but fails when launching the app. I guess I'll keep trying.
(BTW, I posted here because I figured because the question was about the tutorial rather than about AudioKit per se. But I appreciate the reply, and I'll stick to SO in the future)