A system is disclosed for inserting stored advertising content into broadcast content being played over an audio system. The system may have a smartphone in wireless communication with the audio system which runs an application relating to a specific broadcast station that is broadcasting the broadcast content. The audio system may have a processing system for detecting breaks in program content that forms part of the broadcast content. The audio system may further be configured to obtain predetermined advertisements and to play back the predetermined advertisements over the audio system during each break in the program content, in place of advertisements contained in the broadcast content.