A mobile wireless communications device comprising: a housing; and circuitry carried by said housing and comprising a wireless transceiver, a wireless broadcast receiver, audio circuitry coupled to said wireless transceiver and said wireless broadcast receiver, a wired headset jack, a coupling circuit between the wired headset jack and a wired headset, wherein the wired headset includes a reference voltage headset line coupled to a reference voltage contact, and at least a wired headset audio line (26b-26c) coupled to a corresponding headset line device contact (23, 24), a reference voltage device line coupled to system ground and coupled between said audio circuitry and said wired headset jack, and at least one wired headset device line (17b, 17c) coupled between said audio circuitry and said wired headset jack; wherein the at least one wired headset device line (17b, 17c) comprises an audio line; wherein the mobile wireless communications device is arranged to be coupled, via the wired headset jack and the coupling circuit, to the wired headset; wherein, when the mobile wireless communications device is coupled to the wired headset: the audio circuitry is configured to determine the arrangement of the reference voltage contact and the headset line device contact (23, 24) by locating the reference voltage contact, wherein locating the reference voltage contact includes determining a position of the reference voltage contact in a connector of the wired headset; the audio circuitry is configured, once the reference voltage contact has been located, to couple the reference voltage device line to said wireless broadcast receiver such that said reference voltage headset line is coupled to the wireless broadcast receiver to allow said reference voltage headset line to serve as an antenna for said wireless broadcast receiver. a housing; and circuitry carried by said housing and comprising a wireless transceiver, a wireless broadcast receiver, audio circuitry coupled to said wireless transceiver and said wireless broadcast receiver, a wired headset jack, a coupling circuit between the wired headset jack and a wired headset, wherein the wired headset includes a reference voltage headset line coupled to a reference voltage contact, and at least a wired headset audio line (26b-26c) coupled to a corresponding headset line device contact (23, 24), a reference voltage device line coupled to system ground and coupled between said audio circuitry and said wired headset jack, and at least one wired headset device line (17b, 17c) coupled between said audio circuitry and said wired headset jack; a wireless transceiver, a wireless broadcast receiver, audio circuitry coupled to said wireless transceiver and said wireless broadcast receiver, a wired headset jack, a coupling circuit between the wired headset jack and a wired headset, wherein the wired headset includes a reference voltage headset line coupled to a reference voltage contact, and at least a wired headset audio line (26b-26c) coupled to a corresponding headset line device contact (23, 24), a reference voltage device line coupled to system ground and coupled between said audio circuitry and said wired headset jack, and at least one wired headset device line (17b, 17c) coupled between said audio circuitry and said wired headset jack; wherein the at least one wired headset device line (17b, 17c) comprises an audio line; wherein the mobile wireless communications device is arranged to be coupled, via the wired headset jack and the coupling circuit, to the wired headset; wherein, when the mobile wireless communications device is coupled to the wired headset: the audio circuitry is configured to determine the arrangement of the reference voltage contact and the headset line device contact (23, 24) by locating the reference voltage contact, wherein locating the reference voltage contact includes determining a position of the reference voltage contact in a connector of the wired headset; the audio circuitry is configured, once the reference voltage contact has been located, to couple the reference voltage device line to said wireless broadcast receiver such that said reference voltage headset line is coupled to the wireless broadcast receiver to allow said reference voltage headset line to serve as an antenna for said wireless broadcast receiver. the audio circuitry is configured to determine the arrangement of the reference voltage contact and the headset line device contact (23, 24) by locating the reference voltage contact, wherein locating the reference voltage contact includes determining a position of the reference voltage contact in a connector of the wired headset; the audio circuitry is configured, once the reference voltage contact has been located, to couple the reference voltage device line to said wireless broadcast receiver such that said reference voltage headset line is coupled to the wireless broadcast receiver to allow said reference voltage headset line to serve as an antenna for said wireless broadcast receiver.