Well, it sounds as though you don't have enough digital inputs to cover all this. So that may not be an option for you. My receiver has several digital inputs and they are all assignable. They're just labeled 1, 2, 3, etc., not DVD/LD like yours.

And on TVs, using both composite and Svideo doesn't usually work. It works on receivers, but not TVs. The Svideo will cut off the composite on every TV I've checked.

Maybe you should just look at a switch that will do everything since you have a small, all-in-one type receiver. That's what I do outside of my big system with the big receiver.
[Link: partsexpress.com]

They aren't as cheap as the one I listed in the other thread, but it's still far cheaper than a new receiver. There are models that take more inputs, too. This one is kinda small.