Perhaps I should have thought this through first, but ... I ripped my CD collection into an iTunes library, using WAV (so that I'd have an uncompressed version of all my tracks). This comes to about 200GB. I thought I would be able to import this library into my main iTunes library, where incoming music is converted to AAC (@ 160). However, when I select import many tracks are missing and they just come in at WAV, which I won't be able to fit on my iBook. Any suggestions as to how to do what I want? Hopefully it won't involve starting everything over again!