Bridging between ad hoc local networks and Internet based peer-to-peer networks involves coupling a bridge device to a local network using an ad-hoc, peer-to-peer protocol used for exchanging data between consumer electronics devices. The bridge device is coupled to a public network using an Internet-based peer-to-peer networking protocol. In one arrangement, metadata related to media accessible from a media server of the local network is determined via the bridge device, and the metadata is transformed via the bridge device to enable peer-to-peer devices of the public network to discover the media via the bridge device using the Internet-based peer-to-peer networking protocol. In another arrangement, metadata related to media accessible from the public network is determined via the peer-to-peer networking protocol, and the metadata is transformed via the bridge device to enable a device of the local network to discover the media via the bridge device using the ad-hoc, peer-to-peer protocol.