[QUOTE/]While I'm here....How do you make a stereo waveform into mono?[/QUOTE]
Various ways according to preference. With the default menu, right-click the item then /Item Settings/Channel Mode/Mono(downmix); or /Left or /Right Channel, though I think(?) keeping the 'hidden' stereo channel hogs CPU a bit.
What I usually do is explode an unrequired stereo track to two mono tracks and discard one of those. Except that I can't find that option on the default menu! Installed ReaMenus5 so long ago, wouldn't use the default one.
Apart from Audacity, there's free audio editor Wavosaur, which allows zoom with the mousewheel.
http://www.wavosaur.com/