The Divinity Faculty at Cambridge has posted audio files of the first two of Rowan Williams' Hulsean Lectures. Both are available via this link. Subsequent lectures will be posted as the series continues. There are four more to go. The Series is entitled Christ and the Logic of Creation.
Ian McFarland's inaugural lecture as the Regius Professor of Divinity has also been made available. Go to this link. McFarland's topic: The Crucial Difference: For a Chalcedonianism Without Reserve.