I came across a problem recently when I recorded an interview using Skype. For some reason my own vocal only ended up recorded on the left side of a stereo file. You can see the issue in the above screenshot (inside the light yellow square). After a little head scratching I remembered Ableton’s Utility plug-in can fix this. I added Utility as an insert and switch the Mode to Left and now my vocal is properly centered.
“The Channel Mode chooser allows selective processing of the left and right channels of a sample. If, for example, Left is selected, the right channel is ignored and the left channel appears on both outputs. This is especially useful if you have a stereo le that contains different information on both channels and you want to use only one.” – Ableton Live User Manual
Related post: Adjust volume automation using Utility.