I am combining movie clips into one movie with separate audio tracks (voice overs). The first clip was recorded with audio, the others weren't. The voice over audio tracks are louder than the audio on the first clip. I made changes in the "audio settings" for those tracks and exported the file to .mov format. When I play it back the audio is not consistent like I had specified in the Audio settings. It's as if the settings were ignored when exporting the file. What can I do to get the exported file to retain my settings?