After reinstalling Xcode, Qt4 installed from the repository. This is the recommended way to build GUIs for MEP. Thanks to Jacob for highlighting Qt4 and recommending a book.
If you're interested in building the GUI, then install Qt and speak up! :+)
Tom Rondeau had some very nice things to say about a model-view-controller architecture-for-SDR letter I wrote him and fred harris a couple months back. The response got me thinking about exactly how one would want to partition tasks for an SDR, and how those partitions could improve the user experience and user interface.
Model-view-controller type software writing can be very user (and user-interface) focused. What I'd like to look at is how to best write a GUI for SDR. While the application is MEP, I'm looking for generalizations that will be useful to others.
What do you all think?