WHAT IS MMF?
MMF stands for Mobile Music Format. MMF files on a cell phone usually contain ringtones and system sounds. We’ve provided specifications for the MXF file type below. We also give a list of programs that play such audio files.
Files in MMF format contain synthetic sound created with Yamaha SMAF Tools, but can also include graphics and text. In MMF files, three types of sound are used: FM-synthesis, wavetable synthesis, and stream PCM. Below we’ve listed some of the programs that support playback of MMF files. Refer to this list if you’re not sure how to open these audio files.
Yamaha MidRadio Player, Yamaha Mobile Contents Player