-setupspeakerswindows 7
In Windows 7, you can go to Sound configuration, select your speakers and click Configure. You will then get a dialog called Speaker Setup. You start with a question about Audio channels (Stereo, Quadraphonic, …) and in the next step it asks you which of your speakers are full-range speakers.
What exactly are full-range speakers, how do I know if I have them? And what exactly is the difference between checking and not checking that checkbox?
You could get a cable that splits into two channels and one that merges them again. Then just swap the channels inbetween. For example this kind and this kind, if I read correctly... cables and audio isn't my thing :p Anyways, something along those lines should work maybe work?
This might not be exactly what you're after, but there is a Winamp plugin for Windows Vista/7 that provides various options for upmixing stereo signals to 5.1 (and higher), you might just be able to make out the configuration options from this blurry screenshot:
Best Answer
Full range speakers can emit low and high frequency sound (bass and treble). If you have a separate subwoofer, then your main speakers are not full range speakers.
I can't think of what difference this makes to the sound driver, as the crossover in the speaker/speaker system should deal with how to split the sound. It possibly has to do with how 5.1/7.1 sound is output.