1To get started, select the .m4a files you want to convert and add them to the converter.
2Next, use the conversion settings and click the "Convert" button.
3That's all! Now you can download the converted .mmf files.
M4A
M4A (MPEG-4 Part 14)
The M4A music format was developed by Apple. This is the format used to store audio files on the iTunes Store platform. This format is a kind of MPEG-4 container but designed specifically for encoding music. The M4A format can use both lossless and lossy compression using AAC (Advanced Audio Coding) or ALAC (Apple Lossless Audio Codec) technologies.
File type: Audio
File extension: .m4a
Developed by: Apple Inc.
Initial release: 2001
MMF
MMF (Music Mobile File)
MMF or Yamaha SMAF (Synthetic Music Mobile Application File) are audio files with .mmf extension. Files in the MMF format were often used for making ringtones for mobile phones with polyphony support. MMF audio files are usually created by converting from other popular formats with special software like Yamaha's SMAF Tools. Structurally, MMF is similar to MIDI melodies. An interesting feature of the format is the ability to display graphics and text as well.