Mine is ATI and not connected but this is where you want to look. |
Possible cable you will need. | |
Let me back up a step or two on something I forgot to mention (oopps!)
Under the sound properties, when you highlight the audio for the sound on the video card, are you able to click the "Configure" button? If so check there to see if you can set it for multiple speakers rather than just Stereo (it will need to be connected and running to work). If not then it is probably not surround capable but it would be odd to me that HD audio isn't surround capable. Another possibility is the video cards audio is only seeing the 2 speakers in the tv and not the speakers on the receiver. It could see the receiver still but only detecting the tv speakers.
To get 7.1 surround for sure out of the Audigy se you will need an audio cable that will use 3 of the 4 outputs on that particular card (something along the line of the one pictured up top). Using only the one main output is hit or miss with some receivers if full actual surround sound will work. If you go this route be sure to also check the configuration of this cards properties too making sure it is set for multiple speakers and not just stereo with either cable you use.
The coax cable may work as well but again, it could be hit or miss if it will work on that particular card with the receiver.