They are the future and they are already here. The web based music libraries that let you listen to “all the music in the world” without downloading a single megabyte. They look a little bit different. Are not equally good. But they are all terribly interesting to use and follow.

Here is the growing list:
(live streams from clubs around the world) (record songs from web radio stations) (play songs based on your mood and taste)

Radio interface:

Sweeping the net for mp3: (is sweeping blogs for music)

Listen to your own mp3s from elsewhere: