To add a wired second zone to the Discovery Music server simply connect a different set of outputs from the server to another amplifier, receiver, or powered speaker in the other room. By selecting that output from the bottom right of the Roon Essentials application you can now choose what you want to listen to and control the volume in the additional zone. If you want to add a wireless zone, the Discovery Music Server supports AirPlay devices (Apple TV, AirPlay Speakers, AirPlay Receivers), Roon End Points, Sonos Speakers ELAC Discovery End points. For additional information on using AirPlay product with the Discovery take a look at the Discovery Video section of the forums.