Transfer - Titles, but not music?

I want to transfer the music, books, and podcasts that are in iTunes on my Vista computer to a new Windows 7 computer and a new MacBook Air. I followed the instructions, which were clear, and it was easy to transfer my stuff to the new Win 7 computer. I have not yet tried the MacBook. My podcasts and books easily transferred. However when I tried to play one of the operas I had transferred, I discovered that the titles of the music were all listed, but none of the actual music transferred. All of this music came from CD’s that I uploaded to iTunes over time. None of it is music purchased from the iTunes Store. Can someone help? I don’t want to have to add up to 100 CD’s to the new computers. Thanks in advance for all help.

Stephen

via iLounge Forums http://forums.ilounge.com/itunes-related-mac-pc-applications/278349-transfer-titles-but-not-music.html