Can AOL win you over? After all those years walling off its separate, more-special-than-your-Internet content, America Online , making all its previously subscriber-only content available for free. And the company will be spending more than $50 million on marketing, to convince you that you don't have to subscribe, you just have to go there and click. Which is a fine idea, but I still think AOL would be in the black if it'd quit spending so much money sending me CDs. No, really. I'm not just making an old joke. I got three of them last week.