M3U files contain references to media files, but not the files themselves. M3U playlists are generally used for audio playlists, but some may also contain references to video files. It contains a playlist of MP3 files and other audio or video files and lists the locations of multimedia files in plain text format. What is an M3U file?Īn M3U file is a media playlist file that is supported by several media players such as Winamp and iTunes. The M3U file provides index entries for each music, but it is not a real audio file. M3U is misunderstood in the sense that it is actually a simple computer file in the format of a text file that stores a multimedia playlist or a simple URL to the audio/video content that is normally used to play music/video over the Internet. The tool will then repair your computer.Download and install the repair tool here.6 Ways to Open a MP3 File Updated June 2023: Stop getting error messages and slow down your system with our optimization tool.