I was just browsing Craigslist and saw a used HD-DVD player. Now we all know that the HD-DVD format is obsolete. Since it is backward compatible with Audio CDs what about using one as a transport for coaxial and/or optical SPDIF out?
The one I saw was:
Toshiba HD-XA2 1080p HD-DVD Player - $98 USED
[coax and Toslink digital audio outs]