Tag Editor fro XNFSMusicPlayer
This tool can help with that by scanning and comparing the PlaylistConfig.ini with the playlist entries and will also recommend the most suitable info for being easily applied to the file.
NOTE: I've tested this tool with playlists generated with AIMP. It should work with most playlists from music players which generate extended M3U playlists. If you encounter problems with your playlist, tell me.
* Initial release