When we first reviewed Mufin, a music recommendation service that is entirely based around algorithms that can automatically detect the similarities between different songs, we only gave it a pretty average review. Since then, however, Mufin has greatly improved its service and added Facebook and Myspace applications. The most interesting new product, however, is Mufin's new iTunes plugin, which brings Mufin's recommendation engine to your own iTunes collection and allows you to create automatic playlists based solely on the musical similarities between the songs.
In our tests, Mufin often performed better than Apple's Genius feature, but for now, the plugin is only available for Windows.
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Fingerprinting
Mufin creates a unique fingerprint for every song in your library when you start the plugin for the first time. You can choose if you want the recommendations to be based on the analysis of 30 second snippets (for fast analysis) or on the whole song (very slow, but highly accurate). Mufin's proprietary algorithms can then create playlists based on the sim