"Conversions between midi, mmf, sp-midi and wav to convert any melody from your PC to your mobile."
MP3 MMF Converter 2.3 is an application to let you compose and convert you files to Mobile polytones.
Thus you can convert MIDI and MP3 files to call tones, and the conversions between formats are: midi to mmf, midi to sp-mmf, mp3 to mmf, wav to mmf, and mp3 to wav. Now you have no excuse not to have any tone from any file on your mobile.
You can also write your own music in Mobile Music Polyphonic (a program that comes as part of this package) and save it in a mobile phone format.