Thanks again, very clear picture of what you meant originally now.

Sounds like a very flexible system, especially compared with what I'm used to now.

One more little question, do you have to assign a video input?

Like with an HD DVD or BD player. Could I make the "Video3" input labeled "HD DVD", assign no video (just go straight HDMI to my display), and assign coaxial2 for audio?

There will be something set for the video input ("no video" isn't a choice in the menu), but that doesn't mean you have to use the 990's video output with that source. You could simply change your TV to some input other than the one fed by the 990 and take your video straight from source device to display.