I guess what I'm getting at is that in this age of multi-format DVD players, HT PCs and X-Boxes merely selecting an input is often not enough to tell the Pre/Pro what you wish to do with the signals the box will generate.

Many of hte Motorola based pre/pros even try to figure out which device is outputing a signal for you, and while it's nice I don't think it's required.

IMO it's pretty intuitive that to listen to 'Riding with the King' on DVD-Audio one should turn on the pre/pro, select 'DVD-Audio', turn on the DVD-Audio player, insert disk, press play. I don't know anyone who can read that wouldn't get it done without trouble - not true with some current setups.