5.1 Not Working?

Got it going by re installing it, twice.

Feels like I am only getting a 2 channel signal from my HTPC.
Creative SB Z spdif out to Denon AVR 3805 in.

Testing my speakers using Creative's control panel:
Test right front and get audio out of right front AND right rear.
Test right rear and get audio our of right rear AND right front.
Same for left side. Set to 5.1 in control panel.
Same thing when testing is Windows Sound control panel.

Test speakers using receiver's test tone and speakers work individually, as they should. Receiver is set to 5.1.

Pretty sure it's a receiver setting as this is the second sound card to act this way. Just not sure where to look.


Specs
Win 8 Pro 64 bit
ASRock Z77 Pro3
i7-3770
16 GB PC1600
Creative Sound Blaster Z
GTX 660Ti
Silverstone SST-LC10B
Denon AVR 3805 (spdif out from sound card)
Def Tech BP 2006
CLR 2300 center
BPX rears
Edited by oldsmoboat - 1/17/13 at 4:41pm

It was my understanding that it did 5.1 over spdif but the site is not loading for the specs.
As far as replacing my receiver, it was like 1k! It should last 100 years!

EDIT

Well, after reading some posts on the Creative forums I uninstalled everything and re-installed it. Twice.

Seems to be working now but I'll have to tweak the levels.
Edited by oldsmoboat - 1/17/13 at 4:40pm

I just built a new HTPC and am waiting for the new plasmas to come out so I can get this years 65" VT50.
I'd need a receiver that would take at least 4 HDMI...