VLC media player, MPlayer, Winamp, foobar2000. For example, an MP3 file created using the setting of 128 kbit/s will result in a file about 1/11 the size of the CD file created from the original audio source. Lossy compression is designed to reduce significantly the amount of data required to represent the audio recording and still sound like a faithful reproduction of the original uncompressed audio. You can also batch convert M4A to MP3 format. When the status change to Done click the Download MP3 button Easy to Use Simply upload your M4A files and click the convert button. Click the Convert to MP3 button to start the conversion. It is a common audio format for consumer audio streaming or storage and a de facto standard of digital audio compression for the transfer and playback of music on most digital audio players. Click the Choose Files button to select your M4A files. MPEG-1 or MPEG-2 Audio Layer III, more commonly referred to as MP3, is an audio coding format for digital audio that uses lossy data compression. You can only play M4P music via iTunes or iPhone/iPad/iPod. However, because of the DRM protection and format incompatibility issue. M4P file is an encrypted music format developed by Apple Inc.