M4A is a file extension of an MPEG-4 audio file and is usually the format used by the iTunes store as the format of the song downloads. It is a much better format than MP3 as it provides a much more ...

There is a simple way and free way to convert video to MP3. You can do this with MP4 videos, MOV, and other video formats. VLC is a free software for Mac and PC that can extract MP3 from a video file.