If your file associations are set up correctly, the application that's meant to open your.mmf file will open it. How to open a.mmf file? Launch a.mmf file, or any other file on your PC, by double-clicking it. These files can be received via email attachments to Phone or PC, downloaded from the Web or retrieved from a PC.
WAV files and MID files can be converted to MMF format sharing and distributing audio content.
These files are smaller in size compared to standard MIDI format files like SMF even though they resemble MIDI. Because of such parameters users can create custom instruments with the same sound as the devices. In more technical terms, these files possess three types of instruments parameters namely FM (using FM-synth), PCM (using wavetable synth) and Stream PCM (longer audio clips). These MMF files are generally classified as audio file that contain synthetic music and sound used in cell phone ring tones and personal digital assistant consolidated with graphics and text display. The Synthetic Music Mobile Application File (SMAF) is stored in the MMF format and is affixed with MMF extension and is used by Yamaha.
