Soundnode App is an Open-Source project to support Soundcloud for desktop Mac, Windows, and Linux. It’s built with Electron, Node.js, Angular.js, and uses the Soundcloud API.
soundnode.github.io/soundnode-website

Soundnode App is an Open-Source project to support Soundcloud for desktop Mac, Windows, and Linux. It’s built with Electron, Node.js, Angular.js, and uses the Soundcloud API.
soundnode.github.io/soundnode-website

Audio and video casting system with support for custom applications.
BallroomDJ 4 is a complete rewrite of BallroomDJ. BallroomDJ 4 is a ballroom music player (but can be used for other purposes). It is designed with the goal of being able to play music the entire evening without intervention.
Features:
sourceforge.net/projects/ballroomdj4
- Uses your music collection from your hard drive
- No limitations on the number of audio files
- Manual, sequenced and automatic playlists.
- Flexible: adjust the music queue or the playlist queue while playing
- Flexible: almost everything can be configured
- Edit song data. Optionally write the audio file tags
- Uses VLC to play the music
- Runs on Windows, Mac OS and Linux
ballroomdj4.sourceforge.io
ReSampler is a high-performance command-line audio sample rate conversion tool which can convert audio file formats with a variety of different bit-depths and audio channel configurations. ReSampler compiles and runs on Windows, Linux and macOS
github.com/jniemann66/ReSampler
JJazzLab-X is a Midi-based framework dedicated to backing tracks generation -some people talk about “play-along songs” or “auto-accompaniment applications”. You type in chord symbols, select a rhythm (style), then the application generates a complete backing track with drums, bass, guitar, piano, strings, etc.
The objective is to develop a jam buddy able to quickly generate intelligent and interesting backing tracks: realistic and non-boring backing tracks which you can easily adjust to a specific song.
github.com/jjazzboss/JJazzLab-X
Podfetch is a self-hosted cross-platform podcast manager. It is a web app that lets you download podcasts and listen to them online. It is written in Rust and uses React for the frontend. It also contains a GPodder integration so you can continue using your current podcast app.
github.com/SamTV12345/PodFetch
A Podcast app made with Electron because I love Podcasts.
BeatRoot is an interactive beat tracking and visualisation system.
code.soundsoftware.ac.uk/projects/beatroot
www.eecs.qmul.ac.uk/~simond/beatroot
en.wikipedia.org/wiki/BeatRoot
WildMIDI is a simple software MIDI player which has a core software synthesizer (softsynth) library that can be used with other applications.
www.mindwerks.net/projects/wildmidi
github.com/Mindwerks/wildmidi
User interface front end supporting famous MP3Gain engine which analyzes and losslessly adjusts MP3 files to a specified target volume. A complete re-creation (made in QT5) of the original MP3Gain GUI, however it can be run on more platforms.

With these tools one can get information about (via mkvinfo) Matroska files, extract tracks/data from (via mkvextract) Matroska files and create (via mkvmerge) Matroska files from other media files. Matroska is a new multimedia file format aiming to become THE new container format for the future. You can find more information about it and its underlying technology, the Extensible Binary Meta Language (EBML), at www.matroska.org