The audio quality (especially the Q/A session) is quite poor, and the coughing and loud comments from people around the mic can sometimes be heard. But the content is accessible if you listen closely. :-)
The recording was made on March 28th: The event program can be seen by clicking here.
Michael Ruppert's talk and Q&A can be found here:
Researcher John Judge (co-founder of 9-11 CitizensWatch) can be heard discussing the 9-11 commission (not from the San Francisco Citizen's inquiry but on BlackOp Radio) here: