1. a clock that tolls time acoustically grandfatherclock plays audio files to report the time. The default configuration emulates a grandfather clock with Westminster chimes. Cuckoo clock and Close Encounters of the Third Kind files are included as well. As a matter of fact, grandfatherclock can be configured to execute any command. The upstream default is simply to write a *.au file to a sound device file by using cat(1). Since cat is not a good sound player, the default is changed to use sox instead. grandfatherclock depends on sox to ensure that it can run under the default configuration. You also need a kernel support for a sound device to use grandfatherclock. From Debian 3.0r0 APT