First you can verify that you have a valid SPDIF connection. When the computer boots up, you will see a little SPDIF icon at the bottom right of your desktop that will appear and disappear. Also you can check the connection by right-clicking the kX manager icon in the bottom right corner.
double click the kX manager so that your kX mixer pops up. The small window in the bottom right corner allows you to choose which card you are displaying. Make sure that the HOST card is selected in your HOST / CLIENT setup.
NOTE: I am using version 3534f on this computer and a CT4830 (SBLive), which will appear slightly different than what you will see with an Audigy and 3537, and later 3538 versions - but similar.
Right click kx Manager
Settings
I/O status
You will get some something similar to what is displayed below. This shows that there is a valid connection coming into SPDIF A.
SPDIF Inputs
spdif A: 2109204 Freq: 47991; R; S;
spdif B: unused
spdif C: unused or same as B
[R-Rate Locked; S-Stream Locked; V-Valid Audio]
I2S Inputs
0: 0 1: 0 2: 0
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Now make your life simpler by installing ProFX
ProFX for 3534f and 3538L can be downloaded here:
http://members.home.nl/nahutec/ProFx/profx3x.htm
Read the whole webpage before going on.
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I like to unzip ProFX and other plugins into my 3534 folder.
Then load the ProFX plugin
You must create a DSP in your CLIENT card that routes your SPDIF connection out. I find that the easiest thing to do is to is go to the DSP for your CLIENT card, Right click it and choose Clear DSP
Now load 2 things in the client DSP.
ProFX 2KLT
Waver Generator
Route 2 wires from the wave generator to the top 2 connections in 2KLT.
Now go to your HOST DSP and clear it.
load only
ProFX:SRC
ProFX:Peak4
Wire the source to Peak4
The wave generator in your client DSP is sending a constant signal to your outputs. By changing which output is being used in the CLIENT DSP and which input in the HOST DSP you can figure out which ones will make your SPDIF connection between the two.
This is a good place to start anyway.
Install it