Mp3tag is a metadata tag editor that supports many popular audio file formats.

It is freeware for Microsoft Windows, while it costs USD $24.99 for Apple macOS in the Mac App Store.

[3] It includes support for the following audio formats:[4] The following is an example of an M3U playlist file for "Jar of Flies" album by "Alice in Chains" that was created by Mp3tag with the following custom option settings:[5][6][7]