Locking an audio track in Premiere Pro prevents it from being accidentally modified or deleted. This can be useful for protecting important audio tracks, such as dialogue or music, from being overwritten or lost. To lock an audio track, simply click on the lock icon next to the track name in the timeline.
There are several benefits to locking audio tracks in Premiere Pro. First, it can help to prevent mistakes. If you accidentally make a change to a locked track, Premiere Pro will warn you and ask you to confirm the change. This can help to prevent you from accidentally deleting or overwriting important audio.