You can open .m3u files using various media players across different platforms:
Each entry in the file contains a path or URL to a media file. Most modern versions use Extended M3U , which includes metadata like the song title, artist, or channel name, identified by the header #EXTM3U .
Crafting the Perfect m3u Playlist: A Step-by-Step Tutorial - plume.com
Today, .m3u files are most commonly used for IPTV (Internet Protocol Television) . Users enter an M3U URL into a player to stream live TV channels from around the world.
A (MP3 URL) file is a plain-text computer file format used for creating multimedia playlists . It essentially serves as a directory that tells a media player where to find audio or video files—either locally on your computer or hosted on a remote server. How .m3u Files Work
VLC Media Player (highly recommended for its versatility), Winamp , and iTunes .
Because it is a text-based format, you can create or edit these files using simple text editors like Notepad++ or Sublime Text . Common Compatibility
Many developers host curated collections of publicly available channels on platforms like GitHub . To use them, you typically copy the URL ending in .m3u and paste it into your player's "Add Playlist" or "Enter URL" section.