Install wmrack by entering the following commands in the terminal:
sudo apt update sudo apt install wmrack
Description:
Combined CD Player + Mixer designed for WindowMaker
This dockapp combines a CD player and a mixer in one 48x48 window. Very efficient on screen real-estate. Especially handy if you mainly want a mixer, and only rarely use a CD player, but want to have one around just in case. . It's designed with WindowMaker in mind, but it works fine with any window manager, and can be swallowed by afterstep/fvwm/gnome panel/etc.
Homepage: http://wmrack.sourceforge.net
Version: 1.4-5build1
Section: universe/sound