Kind of have to go to analog...

Basically, this device becomes a hybrid of an HDMI switch and a multichannel DAC with some audio switching capability upstream of the DAC, and unless you want to turn it into a full-blown surround processor you need all sources to do internal decoding so they always output PCM. Do you then also add bass management? Tough call. There is a market for it, although the presence of a universal disc player like the BDP-83 probably shrinks it severely - after all, the only formats with audio that can't fall back on coaxial and optical digital connections are DVD-Audio, SACD, Blu-ray, and HD-DVD. Of those, two are niche-market products, one it dead in the marketplace after having been utterly abandoned by its supporters, and one is steadily growing. By purchasing a single player that can do DVD-A, SACD, and BD, you can then hook it to your single multichannel analog input and fall back on coaxial or optical for every other source you have. Having an option like that probably makes it harder to sell an "HDMI to DVI/analog" box unless it could be built for just a couple hundred bucks. Considering the small market (and thus the small volume), I doubt that's a practical price point.