I absolutley HATE when friends ask me to burn them a disc with all this different music. It's never Broadway stuff, but I've done it I think twice for a best friend. I usually change subjects when someone asks me to do such things, because it just really irritates me.
In all honesty, I only buy cast albums if I've seen the show and absolutley LOVED the music, or if its a show I know I'm going to want the cast album for because of an actor or such. For instance, when the new Grease revival CD comes out I'm purchasing that. I, too, like to have the inserts and original CDs. But I couldn't find Mary Poppins OLCR at any store I looked at (I don't shop at those over-priced book/music stores) so I ended up copying it from the library.
I purchased a single song off of a site (yes, actually paid for it with a credit card number), and it wouldn't load onto iTunes so I asked someone to send me the exact same song so I could get it onto iTunes.
Anyway, in the end, I buy more CDs than I copy. So that's a good thing =]
"Sing 'till you're breaking glass or you're breaking down"