Office challenge: Why doesn't my presentation play music?

This week, test your PowerPoint skills by troubleshooting a presentation, complete with music, that doesn't play the music on any computer other than the author's.

A very disappointed PowerPoint user calls you. He's confused because he worked really hard on a new presentation. He even added music to a few slides and it works great-at least for him. When he sent it to his team members for review, the presentation doesn't play the music. What's wrong?