Created attachment 5775 
My proposition

Hi,
its my first post and I don't know if it is the right place to write this kind of things, but let's try :)

When I want to change the volume, sometimes I accidentally mute the sound.
That's because, just above the bar, there is mute button and I release the .ouse buttom, when I have mouse on the mute button.

My solution:

Remove the mute option, and change the no sound icon, beacuse it doesn't look expressively. As shown here: