Take a look at this post right here on PM:
Look down a ways for a post by CPS. He has (as of this writing, still available) an example called ZapPow. I can tell you for me it helped clarify a lot of things, it was probably the single best thing I found when I was writing my own sound library. It's very basic, so on it's own I don't know how useful it is, but as an example to help you on your way, I'd say it's fantastic.