Audio not playing in mov format K'08

Ive seen a lot of threads but none had a solution to this.

With the slides, I included an mp3 from within itunes

dragged it from the media window into the documents soundtrack box

clicked looped

and played just fine throughout the manual presentation.

clicked export to .mov

checked include audio files

when the mov plays it is silent.

I tried one workaround, using the newly recorded audio file reimported into keynote 08 and exported again - still silent

has anyone figured out how to get the audio to play in .mov?

thanks