MP4 (MPEG-4) files were developed by the Motion Picture Experts Group (MPEG) as a type of compressed file which allows for the seamless online sharing of video and audio files. Unfortunately MP4 audio files are not yet used as universally as MP3 (MPEG-3) files. Therefore you may want to convert your MP4 files on your computer to MP3 files. You can do this easily in iTunes. Tips Writer Bio
