I previously transferred my music from my desktop to my laptop thru the "consolidate library" method. I backed it onto a hard drive and proceeded to transfer my library to my laptop. I may have done it twice, or something, but what happened was that all my songs were doubles on my iTunes. eg. there were two sweet child o mine. for every song, one of them was a false file with an (!) next to it, which showed up as file invalid, or location could not be found. so, I've essentially been working with a library thats 20 GB and 9000 songs instead of 10GB and 4500 songs, because half of them are repeats. heres my new problem. Im planning on getting a new MPB, and I'm worried as to how i should transfer my current library (which runs on win7). if I do the "consolidate library" method again, will it have all the doubles? how can I get rid of these "false files" with the (!) next to them? also, will consolidate library work transitioning from a pc to a mac? thanks a lot.