Yes you can hook them up. I hear that audigy digital ports suck. Analouge is probably better mostly because the speakers themselves are analouge. All that decoder does is convert the digital signal into analouge anyhow. Give it a shot. Stay with what ever you like. It realy doesn't get much more simple than that.
"If youre paddling upstream in a canoe and a
wheel falls off, how many pancakes fit in a doghouse? None! Icecream doesn't have bones!!!"