Jeff Bearer at Craft Beer Radio has posted a whole bunch of audio content from the floor of the GABF, and around the Denver area, for your listening enjoyment. I think it is safe to say that Jeff has the best quality of audio for the event, featuring three pages of audio content: great interviews with interesting people and entertaining conversations. Check it out at http://www.craftbeerradio.com/gabf
Even if you were at the event, check this out. He seemed to do a great job making the rounds and probably has different angles and events than you experienced. If you weren't there, well then you've simply got to hear what you've missed and plan ahead for next year.