Overlay background music
After editing a video, I would like to overlay a background music track.
I don't want to record the music coming from my computer while I narrate, because when I edit the video, the backing music gets chopped and loses its fluency.
I simply want to add a background track to the existing recording.
That’s exactly how the import Music feature works. Cuts etc won’t effect the music if you import. See this tutorial for more on audio options: http://help.screencast-o-matic.com/v2-edit-audio
Thanks AJ, that's exactly what I was looking for.
Sorry I didn't find that tutorial before posting - I did look, obviously not hard enough.