Mobile Music Polyphonic is a polyphonic ringtones composer and converter, which allows you convert midi, mp3, wave, mmf, avi, rmvb, rm, wma, wmv, mpeg to cellphone polyphonic ringtone format m4r(iPhone ringtone), mmf(smaf format), amr-nb, amr-wb, amr-wb+, sp-midi. You can convert midi to m4r, mp3, amr, mmf, sp-midi, mp3 to m4r, mp3 to mmf, wave to mmf , wave to amr, also mp3 to AMR, amr to wave, amr to mp3, amr to wave, mp3 to wave and wave to mp3. Convert between mmf, mp3, wave, amr-nb, amr-wb, and amr-wb+ format. Convert mp3/wave/amr/awb to mmf. Sp-midi is nokia ringtone format and more cellphone brands polyphonic ringtone format. Support iPhone, Nokia, Sony Ericsson, Samsung, Siemens and more brand polyphonic ringtone mobile phones.