Though I'm a little surprised that no such translator exists in the home automation world (a box that will learn both RF codes and IR codes such that when you send the box IR code "A" it transmits RF code "B"). When I looked into it one of the issues mentioned that that sampling and regen of analog RF was harder to do. Also, if a lot of RF-controlled boxes are now coming with IR as well, then the market may be too small.

While I agree the market would probably be too small, I would think it could be done. Correct me if I'm wrong, but the x10 system runs on RF, right? Well I have an x10 device that takes IR codes from my Pronto and translates them to x10's language. Of course, this product is only out because x10 made it. I doubt any other company would see the need for a more generic device.