1. Add these lines to sources.list, replace <your dist> with your value, eg. karmic, lucid, maverick
deb http://ppa.launchpad.net/puredyne-team/ppa/ubuntu <your dist> main deb-src http://ppa.launchpad.net/puredyne-team/ppa/ubuntu <your dist> main
Then execute these commands:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 79696851 sudo apt-get update sudo apt-get install supercollider-vim supercollider-doc supercollider