To record a new track, you don’t need to create the track first. Just start recording and Audacity will automatically create a new track.
It may or may not be possible, depending largely on the sound card, but why would you want to do that? Audacity is a digital recorder, so what’s the point in complicating the issue and trying to stream in real time, via an analog interface, to another recorder?
Thanks for the info.
How do I mix all the tracks down to one file? I would have mp3 and wav files in the mix.
I would like to record three mono tracks of trombone and pan them left center and right.
So far, all I can record on are new stereo tracks.