I don't believe burning something with Nero is going to be precise enough to do what you seem to want.
All I can see you doing is recording a DVD with sound on each speaker as you want it played. You might be able to use a combination of utilities to arrive at a DVD where your chapters contain the noise for each speaker and you could select it that way. Say you make 5 projects with SoundTrax, one for each speaker, and make each one into a chapter (or Title) in NeroVision.
I don't have the experience you seem to need, I would just buy a pre-made testing DVD. You could probably track one of those down yourself, since I don't know of any off hand.