Converting .m3u playlists to .mp3 format.
Converting M3U Media Playlists directly to MP3 Audio Files (.m3u to .mp3 conversion) is not possible, since M3U playlists do not contain any media data.
If you want to convert media files referenced by your M3U playlist to other formats, you must first locate/download those files. You can then easily convert those files using most available media editing programs or (online) conversion tools.
In a word, direct m3u to mp3 conversion is not possible.
So don't expect any so-called m3u to mp3 converter or m3u to mp3 free online conversion tool available.
The database currently does not contain any m3u software converter.