Intro In Guix with EXWM I use Dunst for a system alert system. I got my Dunst to have a default audio alert so that when alerts fire, regardless of which of my three monitors I am looking at, I can hear a modest alert noise. I chose the Tardis cloister bell1, a favorite audio of mine. 1. Acquire the sound I located the sound I want on Soundcloud1 and then used one of the several online SoundCloud downloaders2 to grab the file, which came down as an mp3.