Moving more forte-specific stuff to .xinitrc_extra_forte
Clicking the volume control brings up a mixer.
Fixing mute button.

For whatever reason, toggling Master changes multiple channels on
Darmok.  It's really, really annoying.  So, in the widget, if we're not
muted, just force the soundcard to think that.  We force a widget update
when we hit the button, so this should always execute.