Filetype: Apple Lossless Audio File
Category: Audio Files
Audio file compressed with the Apple Lossless Encoder (ALE); uses the Apple Lossless Audio Codec (ALAC), which provides lossless compression; saved in the MPEG-4 container format.
M4A files are similar to .MP4 video files, but do not contain a video track. MPEG-4 audio files that include copyright protection, such as those sold through the iTunes Store, typically have an .M4P extension.
Programs that open M4A files on Windows
Media Player Classic, Apple iTunes, Apple QuickTime Player, Microsoft Windows Media Player
Programs that open M4A files on Mac OS X
Apple QuickTime Player, Apple iTunes, VideoLAN VLC media player
How to convert M4A to MP3 on Mac?
With M4A Audio Converter for Mac, you can convert M4A music to plain MP3 on Mac OS easily, and these audio files can be used on many other MP3 players or mobile phones.