Methods, systems, and apparatus, including computer program products, for tracking media history using a mobile device. In some implementations, a method includes receiving a notification indicating that a mobile device is in communication range of a first player device. First media context information specifying media content being played by the first device and capabilities for the first device is received. The capabilities indicate types of media content that can be played by the first device. The first media context information is associated with the first player device. A second notification indicating that the mobile device is in communication range of a second player device is received. Second media context information is received. The second context information is associated with the second device. A history of media content is generated from the first media context information and the second media context information.