If your "TV" has a disable audio option for it's speakers, get a Harmony remote and program it to disable the TV speakers when switching to HD DVD. You can then switch back and forth with the touch of one button. I like how when I press "Watch an HD DVD," it switches inputs, powers on my XA2, and my correct speaker settings after hitting the one button. The programming capabilites of a Harmony remote is endless. I'm sure you could even have it lower the volume on the TV when switching if your TV speakers cannot be disabled.