I recently updated the itunes software on my iMac and now a bunch of random songs are now gone. When I click on some songs I get a message that the original file cannot be found and then it asks me if I would like to search for it. Most of the missing music is stuff that I bough from the iTunes store, however there are a few albums that I imported from CD's that are completely gone. Anybody have any idea WTF is going on? I have searched every last corner of my hard drive and there missing tunes are no where to be found. grrrr.