[Dave Montague]"Where would I find the Motion preferences so I can delete it? Perhaps this will restore my sound issue export.
I doubt it will affect the export from Motion since that is a QT function. When you bring a Motion render into FCP, does it come in with audio tracks that are empty or are there no audio tracks at all, just video only?
Have you tried using Compressor to render a Motion project? If the audio fails there, too, we might have more to go on in helping you debug this.
Use Spotlight for motion.plist, Should be in your user library, preferences. Look for com.apple.motion.plist
Hey thank you for responding and offering to help. What I have discovered is there is a little button next to the video and audio pulldown in the export window that says "use play range". Selecting that and letting the whole thing render rather than letting it render and then prematurely quitting the render is the problem. I think I was quitting the application's rendering before it had time to mix the audio if that makes sense. In any event, it seems to be working.