LALALA we're making noise.
install serialosc https://github.com/monome/serialosc/releases/tag/1.2
npm install
node server.js
{firefox,chrome} http://localhost:8888/
Try it out in your web browser http://padenot.github.io/mhd14barcelona/
Check out the Hacker League page https://www.hackerleague.org/hackathons/music-hack-day-barcelona-2014/hacks/webmlr