MP3, which is an acronym for MPEG-1 Audio Layer 3, is an audio encoding format. It is one of the most popular audio compression and decompression (codec) format today because of its ability to put music into manageable files, thus making downloading over the internet easy.
MP3 has had a great impact on the history of music. This amazing phenomenon has completely changed the way music is collected, listened to, and distributed. It has made distributing music free, finding and accessing it easy (over the internet), and manipulating music simple using various tools like converting MP3 files into CD files and ripping music off CDs besides loading MP3 files onto portable players and listening to them anywhere and anytime.
As MP3 is currently the most widely-used and popular audio format, it can be played on most popular devices such as iPad Air & iPhone 5s, as well aw on various media players like Windows Media Player, VLC Media Player, etc. If you'd like to know more about popular MP3 players, you can refer to this guide.