just curious... can u run alsamixer? if so, try to UNmute TONE + 3d CONTROL, and check that IEC958 IS MUTED.
I use an Audigy 2 ZS Platinum Pro, output via SPDIF-coax to Digital INPUT on my receiver... I found that muting the SPDIF/IEC958 (digital) surprisingly allows me to send all normal/analog sound out to my receiver via SPDIF, and anytime I play DD(dolby digital)/AC3 via MPlayer or xine it works properly as passthru!!
every new install of BT4beta/pre-final I do as mentioned above = UNmute TONE and 3d CONTROL, and check that "IEC958 (optical raw)" is MUTED. works for me everytime!
u probably have a different setup, just take a look, maybe it works for you?
I am not sure if you are coming here to ask for help, or if u already know the solution and just want to document that you had issues from startup with yr card?
if you do request help, let us know the output of ::
[sudo] aplay -l
[sudo] aplay -L
[sudo] alsactl names