A combined digital audio file player and modulator. In one embodiment, the invention is an apparatus comprising: an elongate housing having a distal end and a proximal end; a socket power adapter located at a distal end of the elongate housing; an interface port in the housing for receiving an external...http://www.google.com/patents/US7400859?utm_source=gb-gplus-sharePatent US7400859 - Combined modulator and MP3 player having socket power supply adapter and/or universal connector
