If false, a PulseAudio server is launched automatically for each user that tries to use the sound system. The server runs with user privileges. If true, one system-wide PulseAudio server is launched on boot, running as the user "pulse", and only users in the "pulse-access" group will have access to the server. Please read the PulseAudio documentation for more details.
Don't enable this option unless you know what you are doing.