Ok, so I have been wondering how to accomplish this: My current setup is just one 1 TB external HDD which is where my iTunes library currently sits. I have about 300 GB left of space. If I was to purchase a 2nd external drive to store additional movies, etc...can I just point the 2nd to the 1st (or vice versa)? Does anyone have a similar setup and can confirm this works? Thinking about it, it shouldn't work any differently then having your iTunes library sitting on your machine and pointing it to the files sitting on an external. I just wanted to make sure doing this with two externals would also work. The major issue I can see is that I can no longer just drop a .mp4 file into iTunes and have it copy down to the external. I'm not sure how it would know which external to put it in.