Not sure. I open up program and then file open .wav file. It brings up 2 wavforms...I assume left and right but it doesn't say which is which. It has a drop down menu option to "split stereo track" which is what I think I want to do so I did that and now each one is has a drop down menu. The top one has a drop down menu with options for "make stereo track, left, right, mono" and the bottom has options for "left, right, mono".