Upload M4A file from your device memory or cloud or via URL
Once uploading is complete, press the convert button
Wait until the end of the conversion and download new MMF fileL
M4A is a file extension used in compressed MPEG-4 audio files that have a lossy compression algorithm. M4A is pretty much very similar to another popular compressed audio format, but is designed to have better quality in the same or even smaller file size. The M4A format was developed by Apple in 2004 and is based on the QuickTime format. Music available for purchase on iTunes usually uses M4A recordings. Many M4A files are encoded with the Advanced Audio Coding (AAC) lossy codec to reduce file size. Some M4A files may use the Apple Lossless Audio Codec (ALAC) instead. The M4A format provides good compression with high sound quality. Any compatible media player will work to play M4A audio, including Apple iTunes, Windows Media Player, VideoLAN VLC media player, Nullsoft Winamp, Apple QuickTime Player, and others.
The MMF format was created for mobile devices. These files most often store cell phone ringtones, although sometimes other objects such as graphics and text, as well as audio data can be found in them. Can be created from .WAV or .MID files using Yamaha SMAF Tools. There is no program to convert MP3 directly to MMF yet, so the MP3 file must first be converted to WAVE format (file with the .wav extension).