Hello, I currently have a 13 inch Macbook with a 1th Internal HDD. I have a music library on iTunes with Alac files and various bitrate MP3's that is currently 600 GB and growing. I use my macbook to listen to music, so having the library accessible at all times is a big plus, since I have all my smart playlists and such. I am thinking of upgrading my computer. My current C2D CPU is starting to show it's age. Since I carry my computer to the office almost everyday, a lighter computer with a smaller footprint is desirable. As such, I am considering a macbook air. 11 or 13, but I am leaning on the 11 option. The let down is storage. Even the maxed out air only has 512gb of storage. So, I would like to know from you. If you have an Air as your only computer, what solutions do you use to store, organize and play media? Please give your input. Thank you. Cheers!