There is only one file type that uses the .MP3 extension:
MP3 Audio File
An MP3 file is an audio file saved in a compressed audio format developed by the Moving Picture Experts Group (MPEG) that uses "Layer 3" audio compression (MP3). It is most commonly used to store music, but may also contain other types of audio content, such as a lecture, sermon, audiobook, or podcast.
You can open an MP3 file with most audio players. In Windows, you can use Microsoft Windows Media Player, which is bundled with the operating system. In macOS, you can use Apple iTunes (or Apple Music), which is bundled with the operating system.
There are a variety of other free and commercial audio players that provide different playback features and conversion capabilities. Some of these audio players include VideoLAN VLC media player, Nullsoft Winamp, Eltima Elmedia Player, Audacity, olimsoft OPlayer, and Adobe Audition.
|antvplayer Media Converter||Freeware|
|DVDVideoSoft Free Audio Converter||Free|
|Eltima Elmedia Player||Freeware|
|File Viewer for Android||Free+|
|File Viewer Plus||Free Trial|
|Microsoft Windows Media Player||Bundled|
|Other music player|
|VideoLAN VLC for iOS||Open Source|
|VideoLAN VLC media player||Open Source|
Updated: February 21, 2021