Convert the iTunes music to an MP3 or, even better, an AVI and then import it as you would any other media file.
One word of warning though. Most iTunes music is copy protected -- which means it will throw up an error code when you try to load it in a video project.
This is why many people buy their video music from Amazon.com, which does not include such stringent copy protection.
Welcome to the forum.
I believe that Steve meant to say "MP3, or even better, PCM/WAV," instead of "AVI." (It's very early on Christmas Eve, where he is.)
Some iTunes music will Import just fine, but some will not. When there IS a problem, the convertion is the best course of action.
Thanks, Bill. Yes, I meant a WAV file.