AcoustID ~ Identify Your Music

AcoustID is a project providing complete audio identification service, based entirely on open source software.

It that consists of a client library for generating compact fingerprints from audio files, a large crowd-sourced database of audio fingerprints, many of which are linked to the MusicBrainz metadata database using their unique identifiers, and an web service that enables applications to quickly search in the fingerprint database.

Website
Applications
Acoustic Fingerprint – Wikipedia

beets ~ The Music Geek’s Media Organizer

The purpose of beets is to get your music collection right once and for all. It catalogs your collection, automatically improving its metadata as it goes using the MusicBrainz database. Then it provides a bouquet of tools for manipulating and accessing your music.

Because beets is designed as a library, it can do almost anything you can imagine for your music collection. Via plugins, beets becomes a panacea:

  • Fetch or calculate all the metadata you could possibly need: album art, lyrics, genres, tempos, ReplayGain levels, or acoustic fingerprints.
  • Get metadata from MusicBrainz, Discogs or Beatport. Or guess metadata using songs’ filenames or their acoustic fingerprints.
  • Transcode audio to any format you like.
  • Check your library for duplicate tracks and albums or for albums that are missing tracks
  • Browse your music library graphically through a Web browser and play it in any browser that supports HTML5 Audio and lots more.

MacOS / Linux / Unix

Website

Mixxx ~ DJ Your Way. For Free.

Mixxx has everything you need to start making DJ mixes in a tight, integrated package. Whether you’re DJing your next house party, spinning at a club, or broadcasting as a radio DJ, Mixxx has what you need to do it right.

Mixx-2.0

Cross-platform, extensible, multi-language, open source & skinnable freeware. Support for iTunes, MusicBrainz, ReplayGain and Traktor.

Website
Download
Manual
Wiki
Blog
Wikipedia
Github Repository

Amarok ~ Cross Platform Audio Player

Amarok is a powerful music player, with multi-language support, for Macs, Unix/Linux and Windows. It has an intuitive interface and makes playing the music you love, and discovering new music, easier than ever before – and it looks good doing it!

Amarok-2.6-InDulciJubilo-screenie4
Website
Downloads
Documentation

AcousticBrainz ~ Analyze Your Music

The AcousticBrainz project aims to crowd source acoustic information for all music in the world and to make it available to the public. This acoustic information describes the acoustic characteristics of music and includes low-level spectral information and information for genres, moods, keys, scales and much more. The goal of AcousticBrainz is to provide music technology researchers and open source hackers with a massive database of information about music. ~ AcousticBrainz

Blog
Downloads
FAQ
Github
Wiki

Mp3tag – Universal Tag Editor

Mp3tag is a powerful and easy-to-use tool used to edit the metadata of audio files. It supports batch tag-editing of ID3v1, ID3v2.3, ID3v2.4, iTunes MP4, WMA, Vorbis Comments and APE tags for multiple files at once, covering a variety of audio formats.

Furthermore, it supports online database lookups from Amazon, Discogs, MusicBrainz or freedb allowing you to automatically gather proper tags and download cover art for your music library.

You can rename files based on tag information, replace characters or words in tags and filenames, import / export tag information, create playlists and more.

mp3tag-en

Website
Download
Screenshots
Export Configurations (customized reports)

Freeware
Mac (Wine)
Windows

CUERipper ~ Open Source PC CD Ripper

CUERipper is an utility for extracting digital audio from CDs, and an open-source alternative to EAC. It has a lot fewer configuration options, so it’s somewhat easier to use, and is included in CUETools package.

Supports AccurateRip, CTDB, freeDB and MusicBrainz

Website
Download
Guides
Hydrogen Audio Discussion

Freeware / Open Source / Windows