Video demo of JSONloops from NYC Music Hack Day 2011: <a href="http://www.youtube.com/watch?v=MSZLLgel6Gs" rel="nofollow">http://www.youtube.com/watch?v=MSZLLgel6Gs</a><p>Every song or loop is stored as plain JSON, see the sample beat: <a href="https://github.com/Marak/JSONloops/blob/master/loops/nyc.json" rel="nofollow">https://github.com/Marak/JSONloops/blob/master/loops/nyc.jso...</a><p>Each node.js "server" acts as a hosting point for the loop. Any number of browsers can act as a control interface for a "server". Eventually, each node.js "server" will sync up peer to peer.<p>Audio playback currently occurs only on the "server", but as browser libraries such as <a href="http://www.schillmania.com/projects/soundmanager2/" rel="nofollow">http://www.schillmania.com/projects/soundmanager2/</a> improve, the browsers will also have audio playback.<p>JSONloops isn't perfect right now by any means, but after checking the commit log from the weekend: <a href="https://github.com/Marak/JSONloops/commits/master" rel="nofollow">https://github.com/Marak/JSONloops/commits/master</a> ( and laughing at the drunken commit messages ), I was thoroughly impressed with how much they pulled off in a 24 hour hacking period<p>I'm excited to see where this goes.