sound blaster
I'm not sure if you're using the live drive with your 880 if you are have you configured the live drive properly thro' the surround mixer . let me know how you get on
heres another idea if you're using the live drive , try the optical in or out as it has both and I believe the are on all the time
i had hell of a game working out how to get the spdif working on mine as well so you're not alone!!!