Abstract: Techniques and technologies are presented for extending digital content sharing to server-located contacts. A mobile content relay device operating in a local network, such as a Universal Plug and Play (UPnP) network, is capable of communicating with remote network devices, such as computer devices or cellular telecommunication devices operating in a Wide Area Network (WAN). The mobile content relay device supports delivery of content from UPnP devices in the local network to virtual renderer devices in the WAN, and from content delivery devices in the WAN to renderer devices in the local network. The virtual renderer devices appear as server-maintained contacts to users of the UPnP devices, and the renderer devices in the local network appear as server-maintained contacts to users of the WAN-based content delivery devices.