jack2: jack2 (A low-latency audio server) jack2: jack2: JACK is a low-latency audio server, written for POSIX conformant jack2: operating systems such as GNU/Linux and Apple's OS X. It can connect a jack2: number of different applications to an audio device, as well as jack2: allowing them to share audio between themselves. JACK was designed jack2: from the ground up for professional audio work, and its design focuses jack2: on two key areas: synchronous execution of all clients, and low jack2: latency operation. jack2: jack2: