Sorry for the very newbie question. I have a stereo track that is essentially mono - I only have music on the left side of the stereo track. I want to duplicate the left side onto the right side so I have the same music on both left and right. When I try and copy the left side, it also copies the right side as well, so I end up with two left tracks . How to copy only the left side and paste it onto the right side? Really appreciate the help.