I'm using iLife '06. Just finished editing a video for my wife's
classroom in iMovie. Turned out great. Exported to iDVD, selected a
theme, clicked burn.

When it was finished, I got a disk with audio on the menus, but no
audio in any of the actual footage.

I haven't yet had time to look at the iMovie to see if there's some
muted audio tracks. The odd thing is that while I was in iDVD, I
previewed a lot, so I would have caught a muted track.

Any ideas?