Cue tone is generic name for a method of automatic ad insertion during re-broadcast from a master program. The cue tone software running on the regional (re-broadcasting) station that can be configured to detect a specialized DTMF tone embedded into incoming the audio feed from the master station. An event caused by detection of the pre-defined DTMF tone will be transmitted to the playout server (FS series) which will interrupt the central program with one or more local advertisement clips.