Hi Scott,
If I’m understanding what you want to do correctly, then this is possible using QT7 Pro.
You need to isolate the track of audio you want to add to your movie in a separate QT player window. So either open the audio file directly in QuickTime, or open the video it’s embedded in, go into the “Movie Properties” menu (Command + J), select the audio track you want and then hit “Extract.”
With your newly isolated audio track window active, select all (Command + A) and copy to the clipboard. Activate your destination movie, select all again, and go to “Edit…Add To Movie” (Should be Command + Option + V). You should now see two audio tracks in your destination movie properties.
Keep in mind that you’ll have to save or export this new dual audio track movie as a new quicktime movie
Hope that was what you’re looking for!
joel
Corporate and Special Event Staging Services
http://www.pacificstaging.com