Files: error.ogg
Source: http://www.freesound.org/people/Corsica_S/sounds/56097/
Copyright: 2008, Corsica_S
License: CC-BY-3.0

Files: shutdown.ogg
Source: http://www.freesound.org/people/Corsica_S/sounds/104719/
Copyright: 2010, Corsica_S
License: CC-BY-3.0

Files: startup.ogg
Source: http://www.freesound.org/people/Corsica_S/sounds/83342/
Copyright: 2010, Corsica_S
License: CC-BY-3.0