I spend about half my time in other music services (Turntable.fm, Last.fm, Spotify, etc.). What I would really like to see is better playlist import/export capa

I spend about half my time in other music services (Turntable.fm, Last.fm, Spotify, etc.). What I would really like to see is better playlist import/export capability. For instance, I would love to have the same songs available whether I'm spinning in Turntable or just playing music for myself. I realize that by the nature of the problem, you can only fulfill half of it. I also know that it's probably a pipe dream since lock-in is so valuable, but that is what I would really like to see from my music services.