sound overlapping

Part way through recording, the audio for a few seconds/minutes later in the video gets put too early which means it overlaps the audio already there and leaves silence for a minute or two at the end of the video where there should be sound. I can't separate this audio in post as it is embedded...

Hi! I'n experiencing annoying sound overlapping when I switch between two scenes who are playing music. To resolve this problem, I would for example need to "shift" the start of the new playing list (just one to three seconds) while the sound of the anterior scene is ending. Mostly, the music...