Looking at the demo movies the program looks very good and I would love to see a MacOS X version.

Looking around I couldn't see any source downloads, where can the WXWidgets source be found. Also, is this coded as an independent library that the rest of the program interfaces with? Part of the reason for asking this question would be to see if using Cocoa for its implementation would be possible, or whether we would have to use the Carbon API; the other reason is find out whether it is something that could be used in other applications.

BTW Omnigroup.com, is a company that has a long history on the MacOS X platform, having been around when MacOS X was still OpenStep. Have you considered contacting them for their expertise.