pulseaudio-module-jack 1:4.0-0ubuntu6 (amd64 binary) in ubuntu saucy

 PulseAudio, previously known as Polypaudio, is a sound server for POSIX and
 WIN32 systems. It is a drop in replacement for the ESD sound server with
 much better latency, mixing/re-sampling quality and overall architecture.
 .
 These modules enables PulseAudio to connect to a jackd daemon.
 .
 The modules are called module-jack-sink, module-jack-source.