If you are looking for actual software to deduplicate audio, these reputable tools provide similar "signature-based" features: Audio Dedupe
Explore Open Source Options: While they may lack some of the advanced "acoustic fingerprinting" features of AudioDedupe, open-source tools like DigiKam or specialized scripts can sometimes handle basic duplicate detection safely and for free. Conclusion
In the age of vast digital music libraries, maintaining an organized collection is a significant challenge for audiophiles, DJs, and casual listeners alike. Over time, libraries often become cluttered with identical or nearly identical files—duplicates born from multiple downloads, diverse file formats, or varying bitrates. Professional deduplication software provides a precise, technical solution to this digital clutter. The Science of Sound Matching