1. A method for advertising in an audio signal, the method comprising: receiving a streaming audio signal at a zone player, wherein the streaming audio signal comprises audio and an advertising information tag; detecting, via the zone player, the advertising information tag during examination of the streaming audio signal by the zone player for playback of the audio; and without affecting the playback of the audio, responsively transporting data representing the advertising information tag from the zone player over a wireless network to a controller of the zone player to be displayed on a display screen of the controller.