dpkg -l | grep "esd"

im@im:~$ dpkg -l | grep "esd"
ii  gstreamer0.10-esd                     0.10.21-1ubuntu3                                GStreamer plugin for ESD
ii  libesd-alsa0                          0.2.41-6ubuntu1                                 Enlightened Sound Daemon (ALSA) - transition
ii  libesd0                               0.2.41-6ubuntu1                                 Enlightened Sound Daemon - Shared libraries