Instead of reinstalling Ubuntu Studio, you can upgrade to it from a current Ubuntu Gutsy Gibbon install.
Install Ubuntu Studio:
sudo apt-get update && sudo apt-get install ubuntustudio-desktop ubuntustudio-audio ubuntustudio-audio-plugins ubuntustudio-graphics ubuntustudio-video linux-rt
Optional: Change the theme to UbuntuStudio. In the Ubuntu menu, select System -> Preferences -> Appearance -> Theme and select UbuntuStudio from the list of themes that is presented to you. Then select System -> Administration -> Login Window, enter your password, and select UbuntuStudio in the list of Login Window themes that is presented to you in the Local tab.
Note: This installs a complete system. If you only want an audio, graphics, or video platform, remove the other respective packages.