MG does not have a AU (Audio Unit) version (yet), and IAA is rapidly becoming obsolete. (there is IAA support in official release of MG iOS still).
Currently the only way to use MG with AB, is to enable midi output from the standalone MG.
I love all the sounds I can get directly from MG, it would be great to have the possibility to open it up in Audiobus, perhaps in the future?
From what I have read I could use it in AUM? I don’t have the app but I would surely buy it only for MG…seriously the MG is beyond my expectations, incredible work!