Conan the Librarian X is a prank app in which Conan tells you to shut up when the incoming sound on your built in microphone reaches certain levels. This is a port of a very, very old System 7 extension for the Mac. It was one of my favorite useless apps for the Classic Mac OS. Ideally, you should install this app on the Mac of someone you want to torture. Simply double click the icon to launch. It runs as a faceless background application, so it will look as if nothing has happened. When running, Conan the Librarian listens in on the built in microphone. When the sound level gets to a certain point, it will tell you to shut up. If you need to kill the application because your life is being threatened, open up a Terminal window and type in the following command:killall QUIT "Conan The Librarian"
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