A personal media system implemented as a tuple service allows remote access, selection, authorization, and transmission of personal media stored in a collection on a home network across a network to a guest network. A mobile client device enables browsing/searching for content, shows media players within a domain, finds a media player within a domain for a given media type, gets a media object, and renders a media object on a given media player within a domain. Each gateway has an agent that registers to the server and responds to commands from the server. The server acts as a hub for moving digital content objects between domains, provides media services on behalf of domains (e.g., transcoding, proxy streaming, etc.), provides a web interface to mobile client devices for control over user domains, sends commands to the personal media agents, and creates an accessible set of domains for a user.