Hi guys,
I wanted to let you know I was able to get through to Apple support and get confirmation on how we could use the jingles and other sound effects from iMovie. The support tech. told me that the jingles are actually taken from Garage Band loops and that the license was the same for both apps since they are part of iLife together. Basically, as long as you're using the sound effects as part of the movie or music project as Apple intended, you can use them in commercial projects as you wish. The trouble comes in when someone tries to just take the sound effects or just the music clips, burn them to a disc, and sell them as sound effects or music loops that other people can use. He gave me the following link.
Thanks,
Rick
http://docs.info.apple.com/article.html?artnum=93762