Is anybody able to use the limited UPnP server option available in Sonos?

ie. Manage|Settings|Advanced|MusicSouces|ShowRhapsodyUPnPServers



Are you able to browse the server? Are you able to queue albums?



Which media server are you using?



Or, is anyone successfully browsing and queuing albums using Sonos' "Show Windows Media Server" option?



I would like experiment a little with these, but am having trouble finding anything which works.