If you're going to listen to audio then you presumably also need the ability to create it

src/freedombone-image-customise

@@ -607,6 +607,8 @@ install_ferment() {
         return
     fi
 
+    chroot "$rootdir" apt-get -yq install audacity
+
     get_npm_arch
 
     git clone $FERMENT_REPO $rootdir/etc/ferment