Files: error/buzzer.ogg
Source: http://www.freesound.org/people/guitarguy1985/sounds/54047/
Copyright: 2008, guitarguy1985
License: CC-0

Files: login/toycaralarm.ogg
Source: http://www.freesound.org/people/AMPUL/sounds/29723/
Copyright: 2007, AMPUL
License: Sampling+

Files: logout/cha ching.ogg
Source: http://www.freesound.org/people/creek23/sounds/75235/
Copyright: 2009, creek23
License: CC-BY-3.0

Files: purchase/camera.ogg
Source: http://www.freesound.org/people/FreqMan/sounds/42899/
Copyright: 2007, FreqMan
License: CC-BY-3.0

Files: purchase/beep.ogg
Source: http://www.freesound.org/people/KorgMS2000B/sounds/54415/
Copyright: 2008, KorgMS2000B
License: Sampling+