I am terribly confused by the creation and sharing of libraries issue, and the use of playlists. I was doing well after I learned to rip my movie DVDs with Handbrake, converted their files to MP4 format, loaded them into iTunes, and synced them with my Apple TV. But I soon realized that I had made a big mistake when the hard drive on my brand new MacBook Pro got full because I had foolishly left all of the MP4 files on my computer, in the movies folder, which is a subfolder of the iTunes folder. In an attempt to free up hard drive space on my computer, I moved the MP4 files to my external FireWire drive but discovered to my dismay that I had lost the synch and my movies had been deleted from my Apple TV. This meant that I had to start over and re-sync all of those movies so that they would be on the Apple TV. Not good. As a stopgap, I would like to create my MP4 files on an external 250 gig FireWire drive, which I connect to my computer and sync them to my Apple TV from there. How do I setup iTunes so that the MP4 files themselves are only on the FireWire drive and the Apple TV’s drive but not on my computer? I would certainly appreciate it if someone could tell me how to do this in words of one syllable. Ultimately, I would like to get a Time Capsule and store my movie files there to sync to my Apple TV with iTunes via my wireless network. But that is a problem for another day. All I have learned so far is that my understanding of the interaction among iTunes, Apple TV, and saved MP4 files is woefully lacking.