PulseAudio in Gentoo can use a system-wide pulseaudio daemon.
This support is enabled by starting the pulsedaemon init.d .
To be able to access that you need to be in the group pulse-access.
For more information about system-wide support, please refer to
	 http://pulseaudio.org/wiki/SystemWideInstance

To use the ESounD wrapper while using a system-wide daemon, you also
need to enable auth-anonymous for the esound-unix module, or to copy
/var/run/pulse/.esd_auth into each home directory.