SlackBuildsOrg/desktop/xfce4-volumed-pulse

This daemon is responsible of making the volume up/down and mute keys of
the keyboard work automatically, and uses PulseAudio for choosing which
card/sink/track to act on. It also provides volume change and mute toggle
notifications if a notification daemon is running.

This is a fork of the original xfce4-volumed to drop GStreamer support and use
PulseAudio instead.