Okay, I have lots of music, and i switched from a desktop to a laptop. I own an Airport Extreme, Express, MBp, @me and an iPhone which are important for this question. My problem starts with my local storage. I simply do not have enough storage on my MBp... So we need a solution for that problem. I decided I didn't need all my "files" always wherever I go. So I am going to build a home store solution. I was thinking of the following: - Airport Extreme with USB HUB, icm with 4x 1 or 2 TB's disk's. (performance is not important.. I need Storage) - Airport Expres icm with Receiver for living room music. Now, we have the home problem solved. If I would ONLY be at home with my laptop I would have no problem. I could add all the USB music to my iTunes, and it would find it with no problem. My iPhone would sync it.. The problem is that iTunes will import the files on the USB storage, but when I am not at home, it will be flipping over missing songs. I don't have any local files in post example. So that means that I will have to add some music to my laptop. My favorites for example. I don't see that as a problem... But then I would have to add those songs twice to my iTunes library. I could make a playlist of the double added local files. Or I could make a second library... I don't think my iPhone (which is fully/automatically Me/iCloud enabled/synced...) would like this... But this doesn't sound right... not really Apple "it just works" So any ideas are welcome.. Keep in mind I don't want to spend more then 100$ on this problem..