No Audio with iDVD 7.0.4 OneStep

[montecito]

I have the newest iMac (3GHz with 1Tb) with the latest iDVD 7.0.4 and when I use the OneStep feature to directly download my mini-DV video (from my Sony VCR TRV17 camera) the burned DVD has no audio. Video is excellent. But no sound!

When I use iMovie to create a video and then "share" it with iDVD, the burned DVD work just fine. But using the OneStep feature to directly download my camcorder results in a DVD with zero sound.

Is there a preference I need to set in iDVD? My Sony camcorder's audio is set at 12-bit sound (the other option is 16-bit) and I have NOT changed it during any recording sessions. It is consistently 12-bit sound.

Other people seem to have this same audio problem with OneStep. What do you suggest?

Many thanks!

Greg