would this temp idea work?

i'm getting my dad a new audio setup for his pc but funds are running low..the plan was to get an onkyo 606, acculune a1's, and a dayton 12 inch sub, but considering wiring and stands, i only have enough for the speakers/stands/and the receiver.

so i wanted to know..from the audigy 2 zs card..could i run 3.5 mono to rca from the digital out into the digital in on the reciever to power the speakers and then run analog(fl/fr) from the card to the aux on his jvc mxgt80 shelf system for sub duty until i can buy him a sub..

The audigy 2 will only let you run analog OR digital. The x-fi cards will let you run both at the same time.