wf-sound-control is no longer maintained and it doesn't work on recent Wayfire versions. Check out the volume widget in wf-panel

wf-sound-control

A small GUI utility to control sound volume, for use with the wayfire wayland compositor. Dependencies: gtkmm, alsa, wayland-client and wayland-protocols.

git clone https://github.com/WayfireWM/wf-sound-control && cd wf-sound-control
meson build --prefix=/usr --buildtype=release
ninja -C build && sudo ninja -C build install

Usage

wf-sound-control (no arguments) - show/update visual indication wf-sound-control inc 5 - increase sound volume by 5 percent & show/update visual indication wf-sound-control dec 5 - decrease sound volume by 5 percent & show/update visual indication