Just to follow up.....I ended up using a Denon AVR-X4300H. It has a "video select" feature that allows you to display video from any source, while you play audio from the CD input, Tuner, Bluetooth, or Phono input. I just have it set up so when he goes to play the Turntable, for example, the video from the Directv box is displayed, automatically. I also just put the TV power buttons on the remote screen so if he wants, he can just turn the TV off while listening to music.

It's a pretty nice receiver, but the AVR-4806 I put in its place was an absolute tank! They sure don't build them like that, anymore.