If you play in the Relay Browser and want to hear the Stargate KAWOOSH when you activate the Spacegate and open the portal to a planet, this is for you.
It will do this only under control of a preference:
or in Preferences:Code:set relayAddSounds=true
RelayBrowser/Look & Feel/Add sounds to certain events
(That also controls whether smashing barrels adds a sound.)
If you have a better sound, replace images/spacegate_activate.mp3 in your local installation and use it instead. If you feel it is better enough that others would also want it, share it here.