Abstract: A system may include wireless broadcast receivers and a wireless broadcast station configured to broadcast a wireless signal causing each of the wireless broadcast receivers to generate an audible advertisement having a promotion associated therewith. The promotion may be for promotion subscribers. The system may also include a digital promotions network (DPN) device and a mobile wireless communications device carried by a given subscriber and that may include a microphone, wireless transceiver, and a processor cooperating with the microphone and the wireless transceiver to wirelessly send at least a portion of the audible advertisement to the DPN device based upon receiving the audible advertisement from a proximate one of the wireless broadcast receivers. The DPN device may be configured to provide, after receiving at least the portion of the audible advertisement, the given subscriber with the promotion associated with the audible advertisement at a point-of-sale (POS) terminal.