1. Login with a COMPUTER to Naxos Music Library (if you are off campus you need to use VPN with which I assume you are familiar...)
2. Go to playlist (in the navigation below the search box) and then click on "sign up" on the right side of the screen. Follow the steps for registration.
3. Once you've created an account go back to "playlists" and create new playlists. Then search for the music you want and add that to your playlists.
4. These playlists and the tracks associated with them will be available on your iphone. So, in other words, you have to add/organize playlists on a computer to then access them on the iPhone. One cannot add playlists and tracks using the iPhone app or search the Naxos Library for that matter.
More infor is avail at: http://naxosmusiclibrary.blogspot.com/2009/11/naxos-music-library-iphone-app-is-live.html