Some time ago a Mac port of Mono was released, so it made completely possible to run .NET applications there. But ArtDoctor needs to operate directly with device and was strictly tied with iTunesMobileDevice.dll, which has no analog on a Mac.
And today I’ve managed to create a fully cross-platform .NET library to deal with Apple devices. It even works without re-compiling for target platform. The trick is to use MobileDevice (dll on Windows and framework on Mac OS X) instead and apply some dll redirections for Mono.
However, it’s not just to change referenced library name. Unlike iTunesMobileDevice, MobileDevice framework doesn’t use native threads on both platforms. Also it is more strict about strings, so hand-made CFStrings most likely won’t do.
P.S. I really have no idea why both of these libraries are included in Windows distribution of Apple Mobile Device Support, ’cause they don’t even reference each other.