Music Shortcut Laptop Button

There’s a small button above my laptop keyboard with a music note on it, it’s meant as a shortcut to start … well, some media player.

So when I press it, it starts Winamp. But now, I have some KILLAH SKINS ( :sure: ) for Windows Media Player, so I’d like to change it so it starts up WMP instead of Winamp…

I’ve looked around but haven’t really found a way to change this… Anyone have any ideas? :beam: