... to use and install Car MP3 M.costa Digital CD changer M.costa Digital CD changer delivres CD-quality sound ... card or USD disk,then you enjoy the digital music(MP3/WMA) in your car,Aux input ... quality that occurs with FM transmitter solutions.Control Digital Music changer from your car redio buttons.Works ... with aftermarket Radio: Panasonic, Sony, Alpine,M-bus, Clarion,Ce-net, Pioneer, and Sanyo.