Where's my iDVD slideshow sound?


Just burned my first DVD. Looks great, but I have no sound on the DVD. It's a slideshow of still shots from iPhoto with audio imported into each section.

When I play the project on my iMac, it works just fine. It's just the burned DVD that plays back without audio. (Yes, I checked the volume -- and I tried playing it on several DVD players.)

Any thoughts?