Making BSPlayer the default

Okay, here's the problem I'm having. BSPlayer is my default movie player (i.e. when you double-click on a movie file, it loads in BSPlayer), but if I put a CD with a movie on it in the drive, it starts playing automatically with WMP.

Does anyone know how to make it so they play automatically with BSPlayer instead? This is with Windows XP, by the way.

Rage