Mumble Server for the Nexuiz community

Mumble offers Voice Chat capability similar to Teamspeak or Ventrilo

Download Mumble for your OS - http://sourceforge.net/projects/mumble/

Ubuntu instructions for getting mumble setup

Connect using the following settings:
server: nullgaming.com
port: 64738 (Default port)

NOTE: Make your Mumble Push-to-talk
Menu > Configuration - Settings - Audio-Input - Transmission - Push-to-talk

Set your push-to-talk key
Menu > Configuration - Settings - Shortcuts - Push-To-Talk