NitroBell can make a cellphone and iPhone ringtones. It can be used to Convert MP3,wav,ogg,asf,wma, and FLAC files to ringtone format(m4r,mmf). Select the section of the track you want, adjust the volume, fade in and out, select the polyphonic tones, and get it just right. NitroBell lets you make all the ringtones you want. It's easy to use for beginner. Converted files are saved in the ‘My Documents 'NitroBell’ folder.