Alright, so I am getting my MacBook Pro in the mail soon, very soon. And I have a really important question about iTunes. I have 60gb of music on my external hard drive, with a capacity of 500gb. On my PC i would just drag the folders from my hard drive into the iTunes window and it will make the library and stuff, but the music WON'T transfer onto my internal hard drive. With my MacBook Pro, I am going to be taking it back and forth from school, my house, college, and friends homes. And the whole point of me making is thread is that when I had to use my external hard drive, I unplugged it, and took it to a friends house and when I was finished over there, I tried to plug it back in to use iTunes but it said that it could not find the file. So is there any way I can make something like this NOT happen with my MacBook.