David Kirkpatrick thinks it is Rhapsody.
We’re entering an era of ubiquitous wireless broadband, where data will be available to us wherever we go. In that kind of world, we will not need iTunes. I doubt most people will want to buy or “own” music at all. It will be far more useful to pick from a giant online library and listen to whatever we want wherever we are.
I didn’t fully realize this until I got a loan of a home music system called Sonos. It’s an elegant way to get music wirelessly from your PC to your stereo, but in its latest iteration it also is well-suited to getting your music directly from the Internet. The best way to get music into Sonos is via Rhapsody. Rhapsody, not iTunes, in my opinion, is the future of music.