I know, and that would have been done long ago if it were possible. It is not an audio device, it is it's own designated device class which is not and cannot be recognised by windows as a sound device.
As I just said I'm a computer expert. I have been building and repairing computers for some 15 years and I programme simulations for supercomputers. If it were that easy I would have done it there may be a way I could find after a great many hours but there's a good chance at the end of it there would still be no way of doing it, and to be honest it wouldn't be worth the time anyway. The usb audio is good enough that the source errors are much worse, as I only use the usb mode for streaming via youtube (low rate lossy compression) or watching TV (both low rate lossy and it's just tv). And the asynch solution in the bifrost is actually pretty good.
Trust me when I say there is no simple solution to the problem. There is no way to bypass the usb and use spdif all the time, which is why I spent the money to get the usb option.
Thanks for trying though
EDIT: On a 2nd reading what i said came across to me a little brash. I wasn't shooting you down, I was just trying to make sure people don't waste thier time to suggest simple fixes I will have already thought of and tried. My apologies if it comes across any other way, I appreciate your attempt to help.
Edited by yblad - 2/23/14 at 3:16pm