...
7. Converting Mono to Stereo: Recordings from monaural devices (such as the microphone in the DMC recording booth) will produce single channel audio tracks. To create a stereo pair, go to tracks > add new > stereo track.
With the selection tool 
, click anywhere in the original track and press ctrl+A (cmd+a) to select all, then ctrl+c (cmd+c) to copy. Now click in the newly created stereo track and press home to position the cursor at the beginning, now ctrl+v (cmd+a) will paste the mono track into the stereo track and automatically give you a left and right channel.
...