Sound For Movie In Logic, No sound in quicktime when running movie Options

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I have been asked to score music for a film and use Logic Express 6 on a G5. I recently bought the moeg2 enabler for Quicktime to allow playback of the movie in logic, ut I now have no sound from the movie ie. dialogue.

Would this be a Logic setting (cant find anything, there is a video setting but not many options) or a setting in Quicktime.

Any help greatly appreciated as the manuals are crap as usual.