Editing Video & Voice without affecting Music

So you’ve got your video almost finished, the music track is laid down, but there are a few more edits to the video you’d like to make to tighten it up. How do you edit the video and voice without affecting the music track? Select the first event on your music track. Right click to bring up the context menu and select Select events to end. This should highlight the all the events on the track. Now right click on the first event again and select Switches->Lock. This will lock all the events on the music track. You can now edit the rest of the video and the music will not move or be cut.