wisemage, just minimize the window. If you have Vista or Windows 7, you can mute the window in volume control as well. However, the noises really aren't that intrusive unless you're playing large-scale games.
Objection: Put your right ring, index, and middle fingers on the arrows, your left ring, index, and middle fingers on the WASD, and your left thumb on the spacebar.
Psychological is easy for beating Baron. just spam debuffs on him, and when he pulls the scars, taking all that damage, just give him one or two powerful hits. He's not that hard to beat, just takes a while.
You ought to make this a tutorial on how to use a program the general public has, if you want a 5 star rating. MS Paint or Paint.NET are some examples. Also, the tutorial makes little to no sense. I understood it up until the part about "Playing around". Then I was just ?.?