For anyone who is interested in listening to high-resolution soundtracks and synching the DD track with your D-Box simultaneously:
I pulled out the manual of my Pioneer Elite BDP-HD1 Bluray player to study how it handles audio tracks. There is a matrix in the manual that indicates the disc audio format (DD, DD+, DTS, etc.) and how those formats are sent out via the analog, digital, and HDMI outputs, respectively.
When the appropriate settings are enabled, this player will send out a DD True HD track as 5.1 PCM over the analog outputs and also as DD over the digital coax output.
In addition, it will will send out a DTS-HD track as 5.1 PCM over the analog outputs and also as DTS over the digital coax output.
Caveat: I know there is no such thing as PCM via analog, but that is what they have in the manual, so I just copied it verbatim.
So, this theoretically should allow me to listen to high-resolution via analog and have the D-Box move via the digital coax. I have two Bluray movies that have a these high-resolution formats: Kingdom of Heaven has a DTS-HD track, and the Fifth Element (Remastered) has a DD True HD track.
I will probably check this out this weekend and report back for anyone who cares.
The only problem is that PCM seems to be the most prevalent soundtrack on Bluray discs.