Audio of the debate is hosted by my buddy Brian Auten who operates the Apologetics 315 blog.
You can download the full MP3 audio here.
I listened to this debate and thought that Dawkins did well against Lennox. It is a very short debate. This is not a rigorous academic debate, as neither participant argued in a formal manner. Dawkins came across as firm, but gracious, and he does a lot better than Hitchens did in his recent debate against Craig.
This debate is recommended for beginners to get a bird’s eye view of some of the issues before moving on to professional academic debates featuring analytical philosophers such as William Lane Craig, Walter Sinott-Armstrong, etc. They don’t really go into complicated details.
My favorite academic debate is this one featuring William Lane Craig vs Walter Sinnott-Armstrong on the problems of evil and suffering. Another great debate featuring Bill Craig and Austin Dacey is here (video) and their re-match is here (audio).
A huge list of other William Lance Craig debates is here, courtesy of ChristianJR4.
WINTERY KNIGHT 
I met Hitchens once. He was all about “selling product” (his book), and wasn’t a particularly gracious individual. He’s good when it comes to analyzing Islam, but I’m not a huge fan of him elsewhere.
Dawkins seems much more dignified and personable to me, though I still have a hard time with him trying to make “finding God” into a science…
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