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.

client libraries used by applications that access a pulseaudio sound server via pulseaudio's native interface.

this package adds support for zeroconf (aka. avahi, mdns) discovery of pulseaudio sinks and sources by client applications.