Multi-Format Audio-Encoder Front-end
A unified display of relevant technical and tag data for A/V files
JACK Audio Connection Kit Qt GUI Interface
A Desktop App for YouTube Music
Alternative GUI for Equalizer APO -- 1 or 2 user listening sessions
Multiplatform GUI of MP3Gain which adjusts volume of MP3 files
Streams many media formats with minimal configuration
Open-source music library management system
Fast, bit-perfect audio editor that doesn't modify samples needlessly
MuldeR's OpenSource Projects
A multi-format module player and library
LilyPond sheet music text editor
Synchronous multiroom audio player
projectM, a MilkDrop compatible opensource music visualizer
this can be downloaded and run directly
Dumb downloader that scrapes the web
The fre:ac audio converter project