In the following question:
I wanted to output to multiple sources simultaneously. I was instructed that this isn't possible. HOWEVER - I have a sound card that has dolby digital 5.1 surround sound - a Soundblaster X-Fi. It has two outputs which I can get to work - i.e. a center channel and rear channel (it also has a sub channel I think, but this isn't probably useful for this discussion).
What I've tried doing is connecting my external recorder to the rear channel, enabling the "quadraphonic" (4 speaker) setting, and then trying to record. Unfortunately, unless the software is actively sending a signal to the rear channel, it doesn't record anything.
What I'd like to do is be able to send the SAME signal to both center and rear channels. Is this possible with the soundblaster card I have?