The world is drowning in individual music files astray with corrupt metadata, insignificant file names, and no way to identify the music. MusicDNS and the Open Fingerprint Architecture provide a system for identifying a piece of music with nothing more than the sound of the piece itself. MusicDNS is the largest single dataset of acoustic fingerprints in the world with more than 16 million individual tracks identified and growing DAILY! With the Open Fingerprint client-code, tracks can be identified consistently against the MusicDNS dataset, and new tracks are easily added. The Open Fingerprint is deployed world-wide--and now the client source code is available under Open Source license. Use the fingerprint code freely, or hook it up to the largest repository of fingerprinted tracks on the planet--MusicDNS. Free client keys for developers and non-profits are available on the website. For commercial deployment, use the low-cost MusicDNS.com service from MusicIP.