Maybe not so newbie questions?
Here is what I did.
I cut a clip, and then deleted the audio in that clip.
I cut another clip that contained suitable shop background noise and copied the audio out of that clip.
The audio clip was not long enough to fill the deleted audio in the first clip.
I "stretched" the end of the short audio clip to fill the gap.
The clip plays as I wish it to but I get numbers in the upper left hand corners of the clips????????

