Great, I wish I could help in some other way besides just cheering from the sidelines, (just started my first programming class haha), but yeah hope it works out. I've been using Famitracker in Mac over X11. It works for a while but then the audio crashes, so it would be awesome to have something work natively for Mac. (I could also more easily convince my composer friends (all Mac users) into doing Chip music.)
I've migrated the MFC basis of Qt FamiTracker version 0.4.6 and have it up and running in OSX. Upgrading the MFC source drop in the Qt environment is getting much easier now. But there are still a few things left to get figured out. At least it plays FTMs! Rather much better than 0.4.4 at that!
http://i.imgur.com/cHptGca.png
The text in some of the widgets is slightly too big and wraps or disappears.
The InstrumentList drag/drop stuff that's new in 0.4.6 hasn't yet been Qt-ized.
Seamlessly pulled in all of the Boost stuff...pretty neat.
Sounds great on my MBA!