pulseaudio-esound-compat 1:0.9.20-0ubuntu1 (amd64 binary) in ubuntu lucid

 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.
 .
 This package contains the ESD compatibility components and enables a
 PulseAudio sound server to fully replace ESD.