soundKonverter is a frontend to various audio converters.
The key features are:
- Audio conversion
- Replay Gain calculation
- CD ripping

github.com/dfaust/soundkonverter
github.com/nphantasm/soundkonverter
store.kde.org/p/1126634
soundKonverter is a frontend to various audio converters.
The key features are:

github.com/dfaust/soundkonverter
github.com/nphantasm/soundkonverter
store.kde.org/p/1126634
GSonic Reference is a high-quality speaker and room correction tool that generates precision FIR correction filters from in-room measurements. It combines spatial measurement averaging with advanced filter generation to deliver studio-grade correction for any stereo listening environment.
github.com/ObsessiveCompulsiveAudiophile/GSonic
hydrogenaudio.org/index.php/topic,129351.0
This application is very useful for all music collectors who are looking for the “perfect” record. In fact, this application allows you to find, through the well-stocked music catalog “discogs.com“, the prices of the respective vinyl, calculating in real time minimum, average and maximum price of those who at this moment are selling just the vinyl you’re looking for.
In addition to the price you can obtain vinyl’s code, year of publication, country of origin and music label. This application also works with cds, tapes and also digital files.
Requires a Discogs account.
play.google.com/store/apps/details?id=it.finproductions.vinylprice
KMix is a sound channel mixer and volume control.

apps.kde.org/kmix
github.com/kde/kmix
invent.kde.org/multimedia/kmix
docs.kde.org/trunk_kf6/en/kmix
userbase.kde.org/KMix
JuK is an audio jukebox application, supporting collections of MP3, Ogg Vorbis, and FLAC audio files. It allows you to edit the “tags” of your audio files, and manage your collection and playlists. Its main focus, in fact, is on music management.
Features:

apps.kde.org/juk
github.com/KDE/juk
invent.kde.org/multimedia/juk
en.wikipedia.org/wiki/JuK
AudioTube can search YouTube Music, list albums and artists, play automatically generated playlists, albums and allows to put your own playlist together. It is adapted to mobile phones and desktop computers.

apps.kde.org/audiotube
github.com/KDE/audiotube
invent.kde.org/multimedia/audiotube
Audex is a CD ripper application. It lets you extract the audio from your CDs to let you listen to them on your computer and your other devices. It includes CDDB and MusicBrainz integrations to fetch the metadata and covers for your CDs if available.

apps.kde.org/audex
github.com/KDE/audex
invent.kde.org/multimedia/audex
userbase.kde.org/Audex
en.wikipedia.org/wiki/KDE_Gear#Playback
K3b was created to be a feature-rich and easy to handle CD and DVD burning application. It consists of basically three parts:
- The projects: Projects are created from the file menu and then filled with data to burn
- The Tools: The tools menu offers different tools like CD copy or DVD formatting
- Context sensitive media actions: When clicking on the icon representing a CD/DVD drive K3b will present its contents and allow some further action.

apps.kde.org/k3b
github.com/kde/k3b
sourceforge.net/projects/k3b
snapcraft.io/k3b
en.wikipedia.org/wiki/K3b
K3b Themes
Pear Desktop is an Electron-based desktop client for YouTube Music designed for Windows, Linux and macOS. The project keeps the standard YouTube Music interface while adding desktop integration, plugins, themes and additional playback features.
The application is open source and distributed under the MIT license.

Pear Desktop loads the standard YouTube Music web interface inside a desktop application window and extends it through plugins and Electron desktop integration. It is not a standalone music service and still requires a YouTube Music or Google account for normal use.
Because Pear Desktop uses Electron, memory and CPU usage are generally higher than lightweight native audio players such as foobar2000 or AIMP. The project is intended primarily as a feature-enhanced desktop frontend for streaming music from YouTube Music rather than as a traditional local-library music player.
A set of utilities for working with Byzantine sheet music.
PsalticTools includes:
• a set of utilities (plugins) for typing of Byzantine notes in parallel double notation (Byzantine and Western), based on MuseScore free music editor;
• the PsalticHelper program for searching for formulas of Byzantine music in music books.
• the UniPsaltica2 font with the characters of the musical Byzantine notation in Unicode.
sourceforge.net/projects/psaltichelper
en.wikipedia.org/wiki/Byzantine_music
sourceforge.net/projects/byzorgan/
iPad and iPhone Discogs Collections And Wantlists App