DSBMixer is a tabbed Qt mixer for FreeBSD. For each installed mixer device, DSBMixer opens a tab. It allows you to configure various sound settings, such as amplification, recording sources, or the default audio device. If built with devd support, tabs are created or removed automatically when a (USB) sound card was added to or removed from the system.
github.com/mrclksr/DSBMixer
QXGEdit is a Qt GUI for editing MIDI System Exclusive files for XG devices (eg. Yamaha DB50XG).
sourceforge.net/projects/qxgedit
wrk2mid is a command line utility for translating WRK (Cakewalk) files into MID (standard MIDI files). This project depends on Qt and Drumstick libraries.
sourceforge.net/projects/wrk2mid
Drumstick MIDI Monitor is a MIDI monitor for Linux using ALSA sequencer and Qt5 user interface.
sourceforge.net/projects/kmidimon
Qsampler is a linuxsampler GUI front-end application written in C++ around the Qt4 toolkit using Qt Designer. For the moment it just wraps the client interface of LinuxSampler Control Protocol (LSCP)
https://qsampler.sourceforge.io/
JACK Audio Connection Kit – Qt GUI Interface: A simple Qt application to control the JACK server daemon. Written in C++ around the Qt framework for X11, most exclusively using Qt Designer. Provides a simple GUI dialog for setting several JACK server parameters.
qjackctl.sourceforge.io
sourceforge.net/projects/qjackctl
This program is an audio player, written with the help of the Qt library. The user interface is similar to winamp or xmms. An alternative user interface is also available.
Qtractor is an Audio/MIDI multi-track sequencer application written in C++ with the Qt framework. Target platform is Linux, where the Jack Audio Connection Kit (JACK) for audio, and the Advanced Linux Sound Architecture (ALSA) for MIDI, are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio.
qtractor.sourceforge.io
en.wikipedia.org/wiki/Qtractor
The Audio File 