Most audio editing programs have a way to copy the good channel to the other channel but you'll wind up with a mono recording. Check the help file of whatever program you use.
Might be easiest if you just get a copy of my or Pat's recording. Haven't talked to Pat to see how his turned out but mine has lots of crowd noise. If you want a copy, PM me your address and whether you prefer flac or wav files and I'll get it postal by Friday.