Beets

Summary: Beets is a media library management system designed specifically for obsessive music geeks. Its purpose is to help users get their music collection right once and for all by cataloging and improving metadata, and then providing a range of tools for manipulating and accessing their music.

Main Features:

• Catalogs music collection and improves metadata as it goes
• Provides a bouquet of tools for manipulating and accessing music
• Can fetch or calculate various metadata types, including album art, lyrics, genres, tempos, ReplayGain levels, and acoustic fingerprints
• Supports plugins to extend its functionality
• Allows users to transcode audio to any format, check for duplicate tracks and albums, and clean up crufty tags
• Offers graphical browsing through a Web browser and playback in browsers that support HTML5 Audio
• Can analyze music files' metadata from the command line and integrate with MPD protocol and various interfaces

With Beets, you can automate metadata correction, fetch information from MusicBrainz, Discogs, and Beatport, or use acoustic fingerprints to guess metadata. The system is designed to be highly customizable through plugins written in Python, making it a powerful tool for music enthusiasts.