CD audio plays before slide appears after quiz

I am having several issues when publishing and testing CDs:

1. When the course goes from finishing Quizmaker quiz to the next slide, the audio for the next slide plays before the slide appears. This doesn't happen on all CD drives, just on some. I did a quick fix by adding extra time at the beginning of the slides after the quiz, but then there's a lag for the audio on some CD drives.

2. Sometimes the audio is cut off when going to the next slide, even though the settings are on auto advance. When I go back to the silde, the entire audio plays.

3. Most frustrating is that I am unable to test some of the CDs on my computer because a different course appears when I insert the CD. I've cleared all my temporary files and cleared my Google browsing history and restarted my computer, all to no avail. When I insert the same CD on another computer, it will play correctly. This means I can't use my computer to test the CDs that I've burned.

Please help!

Anne