I tested it, and as far as I can tell, Phrogram works 100% with Virtual PC, A mac program that simulates Windows. So, that would be an option for non-Intel mac users.

There is not a Mac version, nor one under development currently.  We do look forward to having one, but given schedule and resources and plans, we're not working on it yet. Partnering with a Mac development company on a port would be something we'd be happy to discuss.  Until one is done, the various ways of running Windows ...