Hello. That would be very easy to do in Sound Forge, which is what I'm most familiar with. I only just started to mess around with Vegas Audio LE recently, so I too would like to know how this would be accomplished with Vegas alone. Do you have any version of Sound Forge? If so, you could open the file (or a copy)in Sound Forge and easily do what you need to do there. Then save it and put what you need back in your Vegas project. Hope this helps.
Vegas works with a stereo pair as a single track, so if you want to separate right and left and save to a new file only one of those channels, Sound Forge is your tool.
yeah you could render a new file with Vegas using the multiple mono feature to get two new mono wav tracks. They'll be labeled Left and Right in the resulting file names.