linking timing of powerpoint slides and narration when exporting to a movie

[tcpearson]

I created a presentation using powerpoint 11 in which narration is linked to each slide. The timing for each slide is adjusted to match the length of each separate aif audio file. All slides are set to load automatically with regard to sound and progressing to the next slide. When I play the powerpoint through the program, all works great. However, I am trying to export it as a movie to post on a website and share via email. When I view the movie, the sound and slide length are not linked. If I fast forward through the presentation, I would like to be able to fast forward to new slides and hear the narration intended for the particular slide as opposed to having slides and narration get out of sync.