MP3-ID3Tag-Renamer (MIR) - Version 3.1 MIR finishes off with MP3-files without ID3Tags and filenames like "track_01". Beside the work with single files MIR is especially designed to modify a lot of files and complete directory-structures. MIR extracts information from existing ID3Tags to modify filenames and to generate and reorganize directory-structures of userdefinable sizes.