You have posted this same post here, in the Vista forum, and the XP forums.
That's two too much. Let us know which OS you are using by posting a reply here, and if necessary I will unlock whichever other post is relevant.
I have a USB to SPDIF converter that is supposed to support 5.1 surround.
I can hear stereo sound, but not 5.1 surround.
I know there are many free tools that enable passthrough on spdif so the receiver does the dedcoding instead of the PC.
However windows 7 doesn't see the USB audio device as SPDIF
is there a way to configure the USB audio device as SPDIF without drivers?