Here’s the magic command (that I can never remember) to add ubuntu studio and , perhaps more importantly for me, a real time kernel, onto my existing ubuntu install (I could probably get along with the standard ubuntu desktop + the rt kernel, but eye candy is always cool) . Tip found at http://www.ubustu.com/globe/2007/05/23/add-ubuntu-studio-to-an-existing-ubuntu-install/
sudo apt-get update && sudo apt-get install ubuntustudio-desktop ubuntustudio-audio ubuntustudio-audio-plugins ubuntustudio-graphics ubuntustudio-video linux-rt
