Here is a link to the second half of the Libertarian presidential debate held in Biloxi, Mississippi, on the evening of February 27. It lasts 40 minutes. There is only about one minute of dead time at the beginning.
The link goes to the second half of the event, which had five participants: Marc Allen Feldman, Gary Johnson, John McAfee, Darryl Perry, and Austin Petersen. Earlier there had been a preliminary round with additional candidates. The audience for the first half determined that these five candidates should be in the final round. Thanks to IndependentPoliticalReport for the link. UPDATE: see this Examiner story about the debate.