Cool upgrade: check out the iJet if you use an iPod. It has a small device that attaches to the base of the iPod and a small remote the size of garage door opener. I used industrial strength velcro and put the remote on top of the left brake fluid resevoir. It's velcro so I can remove it when I get on/ off. This remote allows you to adjust volume, pause and skip songs. Indispensible when you are on long hauls.
[moto]
I have this:
http://www.monstercable.com/productdisplay.asp?pin=3714 strapped to my handle bar clamp. Works great, fairly weather proof and easy enough to hit the buttons with my gloves on.