How hard would it be to put a button on the screen that will take you right to AV Sound?

 

On my way driving home this morning my setting didn't sound right, and it was a pain in the ass to press

menu settings AV Sound, just to see that my setting were still there. I thought maybe a button in the middle of the iPod wheel, for example, would be a nice addition. Thanks in advance for any input.

 

-CMIYC