Has anyone any thoghts on the following?

Aux/Audio IN port to use Receiver's built-in amp and speaker outlets.

And/or can anyone suggest how best to stream radio on my network with a digital radio tuner (has digital out), my linux server and a bunch of Rio Receivers on the network? I'm not really sure where to start.

Video/TV out port to replicate the small built-in screen display on a larger display.

Specificaly, I'd like to be able to control the Receiver that is next to the rest of the Home Cinema kit, to be able to play the mp3s and also to be able to actually SEE what I'm doing with the remote from the other side of the room by having it display to the TV. Something simple like a composite video signal would do. What are the chances of being able to do that? Anyone already doing it?