I want an audio file to be played on only the left side, but when I use the L/R slider, it still plays on both. I’ve searched around a ton for an answer, and I can only find instructions for how to turn it from one side to both, and not the other way around like I want. Does anyone know how?
You mean the track “Pan slider”? (http://manual.audacityteam.org/man/audio_tracks.html#pan)
If that is set all the way to the left, then only the left channel plays. If you still hear it from both speakers / both sides of your headphones, then it’s not Audacity doing that.
How are you listening to Audacity?