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 tools provide command line access to various features of the
 PulseAudio sound server. Included tools are:
 .
   paplay - Playback a WAV file via a PulseAudio sink.
   pacat - Cat raw audio data to a PulseAudio sink.
   parec - Cat raw audio data from a PulseAudio source.
   pacmd - Connect to PulseAudio's built-in command line control interface.
   pactl - Send a control command to a PulseAudio server.
   padsp - /dev/dsp wrapper to transparently support OSS applications.
   pax11publish - Store/retrieve PulseAudio default server/sink/source
                  settings in the X11 root window.