" Songs purchased on the iTunes Store can be copied to an unlimited number of computers. However, only five computers at a time can play your purchased music."
Aha, it doesn't apply to non-iTunes content?
Read more at http://www.apple.com/support/itunes/musicstore/authorization/
I've recently been switching laptops (long story, using work computer and my personal external hard drive that has all my files). However, each time I access songs on each of these computers, I'm using up my limit of computers...
My concern is that once I purchase my own computer, I'll be out of computers to access my songs. Is there any way to edit this list so you can remove computers, in my case that I'll never use again?