Lyndel
The suggestion by ossocao is the method I use, works great.
Curious, though.
Have used the Xantech router, but don't see how your way would isolate any IR. It will route when different IR receivers are connected to the various routed ports, but you would still have to have the IR receivers separated somehow, which leads you back to the same problem.
BTW, the routed IR outputs are NOT amplified, like the common ones are. Found that one out the hard way! Not mentioned in the instructions and specs, even though it imply's it by it's name of Amplified IR Router.
Dan