James,
Any reason why the BDP-1 could not be set up to output 24/192 USB for those with hi-hiz USB DAC's in addition to AES or S/PDIF? Linux already supports USB to 24/192 in Voyage MPD 0.16+ so it should be a configuration change only.
I'm using an Alix/Voyage MPD motherboard 16/44khz right now into my Bryston BDA-1 USB input, just learning about MPD and various MPD clients, and it seems to work just fine.
Tom