I know this is a shot in the dark, but I'm trying to find a lecture I heard in 2011 or so.
I have a listing of it as "Islam 101 - MCC.mp3". About two hours long. The speaker was an American leader (I think MCC was one of the Muslim Community Centers) and he gave a very comprehensive overview of Islamic beliefs. He was speaking to non-Muslims.
Does that ring a bell with anyone?