RE: CDs, I THINK FastLane has 'em though I didn't see them when I searched on it. (FastLane is the sponsor of this list; see the button at the top of the screen to take you there. You can always call Phil who runs FastLane. He is EXTREMELY helpful and knows his inventory. Prices are generally about the best you'll find.)
If that fails, you can call 1-800-FOR MERC (the MB main phone line) and order from them (I think).