I have all my I tunes content on external HD, and I direct I tunes to this to use it. My old I mac only had a 500gb HD so I used this method of storing my stuff. I now have a new 27 inch I mac which has a 3tb fusion drive. I do have I tunes match, but I am aware I cannot get access to all my content this way. What would you recommend to move the content to the new mac, I will also be using a 3tb and 2tb external HD's with the new computer but again I am unsure how to utilise them with this set up.