Comment 25 for bug 883485

I got solution #2 more or less working, but it seems XFCE4's default action for the unmute button overrides my custom command. Binding the unmute command to the calculator button (which was previously not used by any application) makes the calculator button do muting and unmuting properly, but it isn't really something you want to bind to your calculator. Is there a way I can actually erase XFCE4's default action for XF86AudioMute (thus making it unfunctional)? I suspect that if I manage to do that I could have more luck binding my own commands to XF86AudioMute. It would be somewhat of a workaround, but it would do the thing.