There's currently no publicly available mac binary for vbam, and most people looking for one aren't willing to build from source or use a command line.
I have read through the build scripts and built the SDL version (since there's no complete Cocoa ports of GTK and wxwidgets, and the QT port was scrapped) as an Xcode project.
Given the limitations of mixing SDL with Cocoa and what I wish to accomplish, I don't plan on reaching feature parity with the Linux and windows versions, and thus would like to make a separate, OSX-only project which focuses on trying to make the SDL port more user-friendly. This will prevent cluttering up this repository, or having development stalled due to lack of mac developers.
I'll make the source publicly available, prominently state that all the source comes from this project, and will not ask for donations.