Tommy, I did what you are talking about with an Audigy 2 ZS sound card.

But I replaced the card with a 2 channel card and just went with 1PCM stream or DD/DTS a couple of years ago. Reason, soundquality was worse with decoding DD/DTS in PC than in the G68.

And 1 PCM for music was enough and provided better soundquality over SPDIF with the ESI Maya 44 than the Audigy 2.

I used a special ASIO capable driver with the Audigy2 but the new card was ASIO as well and with tighter drivers..

If what all here are saying is true, you could get the X-Fi prelude and start soldering for your particular project. The G9 connector is probably they key...

BUT, I'm leaning on USB cards/DACs because many report they are getting better fidelity with less interference with an outboard sound decoder.

I will start a thread about USB audio into G68 soon..

DSP8000SE, DSP7200SEHC, DSP5200SE sides, DSP7200SE rears, 861v8, 210, Sim2 Ultranero 4, Stewart Cinecurve 2.35:1, XEIT CM-5E Anamorphic lens, Dune HD Duo Cinema 8K and Wireworld Platinum 48G HDMI -> UHD722 -> Shunyata Omega Ethernet. Shunyata/Furutech power-cables/filters. SR Master Fuse@861v8. Uptone Etherregen with 10MHz OCXO clock.