Tojo do you know what kind of stereo he has? Also if you know the makes and models of the other devices I could easily setup a graph that would show you what connections to make from each specific device. This would help you with the setup and it would help to limit confusion when the user wants to select a specific device to use.
I'll have to check but I think I can setup macros for the Kameleon which helps alot in the end.