Originally Posted by ultron
I think he means RCA.
Any idea if windows allows you to set SPDIF to 5.1 with a Dolby Digital Live or DTS connect audio device? That's the only way I'm seeing CMSS3DH or Dolby headphone working over SPDIF. My motherboard has neither.
I have to admit, this is the first time I've ever heard RCA jacks referred to by any other name.
Yes, the X-Fi Titanium HD outputs CMSS-3D Headphone-processed audio over the RCA jacks. It wouldn't be as useful to me to have those jacks otherwise (I use them as line-out to an external receiver that drives my Stax setup, and the receiver is old enough that it lacks S/PDIF input, only RCA), even if 3.5mm-to-RCA adapter cables exist.
The way S/PDIF output on X-Fi cards work is kind of weird. It's largely independent of the Windows speaker setting; instead, what you do is check "Play Stereo Mix using Digital Output" in the control panel, which does exactly what it says on the tin. Works perfectly with CMSS-3D Headphone. If that isn't checked, however, you aren't going to hear anything out of S/PDIF. (Also, do NOT set "SPDIF Out" as the primary audio output device, because it won't work for anything other than DVD or Blu-ray movies. It needs to be on the "Speakers" device at all times.)
However, once you enable Dolby Digital Live or DTS Connect, the drivers automatically switch to 5.1 speaker mode instead of Headphones, and the same thing is done to the Windows speaker setting (albeit the channels aside from front left/right are not treated as full-range by default). Turning it back off, though, leaves the Windows speaker setting at 5.1 while the X-Fi setting reverts to whatever it was set to beforehand (Headphones in my case).