I'll go a little deeper than Devil did for you.
No disrepect bro. It's a cool idea.
I might try this setup myself...

1st: You must be using a theme with winamp controls.
Or go to loose-screws and look for some amp
modules for LS and load it up in your theme.

2nd: You will need to edit your hotkey.rc file located in
your litestep\personal folder.

Now you need to know the bang commands to control
winamp. Check the !about litestep window for active
bangs.


Hotkey Modifiers are
CTRL
SHIFT
WIN
ALT
Or combined CTRL+SHIFT or CTRL+ALT you get the idea!
Now when your keyboard is setup to use WIN+C it plays
your winamp.