The Ringtone Converter is a software program for both Microsoft Windows and Apple Mac systems that allows you to add new ringtones to your mobile phone without the need for cables or expensive premium rate SMS services.The Ringtone Converter supports most makes and models of phone including Audiovox, Alcatel, Ericsson, HTC, Inventec, Kyocera, Microsoft, Motorola, Nokia, NEC, OKWap, Panasonic, Philips, Sagem, Samsung, Sony, Sendo, Sharp and Siemens handsets, with more added every month.