My post "Imam Rauf to be exposed..." linked to Ace's post, which linked to a post on Weasel Zippers, which linked to the original post on Pam Geller's Atlas Shrugged. If you go to the original post on Atlas Shrugged and read since then, you'll find the tapes. I haven't read most of it, but what I have read you will not find controversial and will probably agree with. To you it won't be any big deal, and certainly no expose. Others, including me, will disagree with you.
How's that for sourcing?