Alright, so I'll try my best to explain what I am trying to do and hopefully this will all make sense and someone will be able to help me out. I purchased a new Air with a 128GB hard drive and want to transfer my iTunes library to this new machine from my old MacBook Pro. Using TuneSpan I previously transferred all my music, videos, etc. to an external hard drive. I don't have the space or the desire to put all these files on my new machine, but I would like for the files to show up in iTunes so that when I have the Air hooked up to the external, it can easily locate the files and play them (or stream them to the AppleTV.) I've tried exporting my Library from the MacBook Pro and then opening it on the Air, but that didn't do anything. Basically, I would like to see all the files in my new iTunes library, but for those that will permanently reside on the external, there will be the exclamation mark showing that iTunes cannot find the file locally.