[gekko]

Stores have the right to sell their product to whomever they choose. They can choose not to sell it to people under a certain age, they can choose not to sell it to blacks (though, then they lose federal support, and some other stuff).

There is no federal law that states you can't buy, possess, or hear that CD. But stores can do whatever they want.

I don't think there's a law on the sale of movies either, just in theaters.