Convert your favorite MP3 songs to the standard wav extension which can be played be nearly all devices specially older car stereos."MP3" is the extension used by most media stores and can be played by a lot of multimedia devices however older car stereos which play audio CDs cannot play MP3s. This free utility allows you to enjoy your favorite songs in your car without being a professional. You can control the output file quality and thus size with a simple slider. This tool differs from others available online by its simplicity ,the user-friendly interface and last but not least batch conversion . Simply it gives you professional results with rookie controls.