Hi Douglas,
my guess is that you messed with Winamp's equalizer settings.
Use alt+g to get into the equelizer, and CTRL+tab to give focus to the window.
From there, you will need to find out the keystrokes for panning yourself.
I think it was something with k for centre, j for left, and l for right panning.
It might also be an alt combination you have to press, really not sure.
I think the built-in JAWS keyboard help, accessed with JAWSKey+h, has the shortcuts available that can be used within the equalizer.
Sorry for not being able to help further, but it's just so long ago that I last used it.
Nermin