Hi,
you should be able to stream music from your Mezzmo server to any Sonos device that supports media servers, assign the Sonos profile to the device you are using as a controller then when it browses the Mezzmo server it will get the correct file types and should be able to play files to the sonos. There is currently no direct collaboration between sonos and Mezzmo, the profile has been created with the help of Mezzmo users who have sonos devices.