I think it will be correct if I say this to be "OpenMusic". Atleast I liked the idea of people collaborating on the web to make nice music. I heard about these music sites through NPR news. Listen to one such remixed song - "Peace and hate" by The Submarines using one such sites www.jamglue.com - by simply clicking on the "Peace & Hate" link. Wanna remix? click on "REMIX"! Have fun and enjoy the music!
I referred to the web for the term "Open Music" and found many hits but these two caught my eyes - http://magnatune.com/info/openmusic and http://openmusic.linuxtag.org/. Wondering whether I can use the term "Open Music" to this anymore?!?!?!?
Peace & Hate by 
thesubmarines 