Is there a way to turn off the sound on direct minion action?

As title says is there a way to turn of the clinking sound it makes when you move your minions around. I'm constantly moving my minions around to make sure they are in front and the noise is so annoying.

Default Key for direct minions is `

Please give us the option to turn it off, its really annoying!!

Please introduce a mute for this. Its crazy!