GNU Solfege is *free* ear training software written in Python 3.4 using the Gtk+ 3 toolkit. The program is designed to be easily extended with lesson files (data files), so the user can create new exercises.
EasyTAG is a simple application for viewing and editing tags in audio files.It supports MP3, MP2, MP4/AAC, FLAC, Ogg Opus, Ogg Speex, Ogg Vorbis, MusePack, Monkey’s Audio, and WavPack files, and it works under Linux or Windows.
Features:
View, edit, write tags of MP3, MP2 files (ID3 tag with pictures), FLAC files (FLAC Vorbis tag), Ogg Opus files (Ogg Vorbis tag), Ogg Speex (Ogg Vorbis tag), Ogg Vorbis files (Ogg Vorbis tag), MP4/AAC (MP4/AAC tag), MusePack, Monkey’s Audio files and WavPack files (APE tag)
Can edit more tag fields: title, artist, album, disc number, year, track number, comment, composer, original artist/performer, copyright, URL, encoder name and attached picture
Auto tagging: filename and directory to automatically complete the fields (masks)
Ability to rename files and directories from the tag (using masks) or by loading a text file
Process selected files of the selected directory
Ability to browse subdirectories
Recursion for tagging, removing, renaming, saving…
Can set a field (artist, title,…) to all other files
Read and display file header information (bitrate, time,…)
Auto completion of the date if a partial one is entered
Undo and redo last changes
Ability to process fields of tag and file name (convert letters into uppercase, lowercase,…
Ability to open a directory or a file with an external program
CDDB support using Freedb.org and Gnudb.org servers (manual and automatic search)
Quod Libet is a GTK+-based audio player written in Python, using the Mutagen tagging library. It’s designed around the idea that you know how to organize your music better than we do. It lets you make playlists based on regular expressions (don’t worry, regular searches work too). It lets you display and edit any tags you want in the file, for all the file formats it supports.
Unlike some, Quod Libet will scale to libraries with tens of thousands of songs. It also supports most of the features you’d expect from a modern media player: Unicode support, advanced tag editing, ReplayGain, podcasts & Internet radio, album art support and all major audio formats – see the screenshots.
Ex Falso is a program that uses the same tag editing backend as Quod Libet, but isn’t connected to an audio player. If you’re perfectly happy with your favorite player and just want something that can handle tagging, Ex Falso is for you.