Digital Workshop

I have made a course in Opus with a voiceover. It works fine, but when i publish to Flex, all my slideshows were instructions are given about a certain procedure, the voice-over all of a sudden becomes a chipmunk. It plays like 5 times faster then normal? Anyone has a clue why?

I used mp3

Thnxxx in advance!

And my movies don't play at all anymore. I tried several extensions, but it refuses to play. Then i converted them to flash, but then the rate of frames is too high