Fireside Chat with Cory Doctorow. Make sure not to miss Cory's main talk "What the cyberoptimists got wrong - and what to do about it" one hour earlier, day 19:00h in rc1.
This Talk was translated into multiple languages. The files available for download contain all languages as separate audio-tracks. Most desktop video players allow you to choose between them.
Please look for "audio tracks" in your desktop video player.