jack: JACK - A low-latency audio server jack: jack: JACK is a low-latency audio server, written for POSIX conformant jack: operating systems such as GNU/Linux and Apple's OS X. It can connect jack: a number of different applications to an audio device, as well as jack: allowing them to share audio between themselves. JACK was designed jack: from the ground up for professional audio work, and its design jack: focuses on two key areas: synchronous execution of all clients, and jack: low latency operation. jack: jack: