I recently installed Windows 7 as the OS for a PC that I'm using as a media center running XBMC. Initially I only put in 2 speakers. Now I've added rear speakers. The soundcard is a SoundBlaster Live 5.1, which I got drivers to work properly in Windows 7 (at least it seems so). The soundcard does have rear sound outputs (a black ring for rear, green for front).
However, it only shows Mono and Stereo as options in Speaker Setup. I would like to have and use Quadraphonic or better as options. How do I get these options to show up?
Here is a picture of Quadraphonic audio channel showing up in my other Windows 7 PC:
NOTE: I want to note that the stereo speakers, front left & right, both are working fine. I just cannot get the rear outputs to receive sound through Speaker Setup.