Comment 4 for bug 355300

I'm not sure I'm happy with that fix. It effectively makes the GUI volume control useless, and there's not visual feedback any longer. There should be *one* master mixer, i don't know whether that should be the software or the hardware one, but one's enough. It sounds hackish, but as the hardware mixer can't be disabled, maybe the GUI could reflect the state of the hardware mixer, without actually changing it?