The Last HOPE conference may have ended a couple weeks ago, but the audio lives on. The guys at 2600 just released MP3 recordings of the conference lectures. Each talk is available in both 16kbps and 64kbps.
A limited number of the radio broadcasts that originated during the conference are also available at radio.hope.net/archive.
Some of the talks are detailed in the CNET coverage of the conference.
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