Nowadays there is a proliferation of smart de- vices used for media consumption. Usually, media contents are streamed from a Content Distribution Network (CDN), through a cellular network, which can get overloaded when there is a large number of active users per cell. At the same time the devices, i.e. smartphones, typically possess a set of wireless interfaces such as WiFi and Bluetooth that can be used to communicate with other devices in its proximity. In this work we propose a publish/subscribe, opportunistic network protocol aimed at off- load infrastructure network nodes. It contributes to optimize the cellular network usage among mobile devices and to reduce the costs and energy consumption induced by the reproduction of media that are temporally popular