Duplicate Media Finder - Duplicate Media Finder locates and deletes identical files and similar media
Lossless Audio Checker - A utility to check whether an audio file is truly lossless or not.
Audio Dedupe - AUDIO DEDUPE Music Manager will delete duplicate mp3 files, find similar songs, delete duplicates from iTunes. Organize music files and save disk space.
REW - REW is free room acoustics analysis software for measuring and analysing room and loudspeaker...
dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.
Spectro - Spectro is a freeware audio file analyzer for windows.