Panic Stream ( http://panicstream.com/ ) also has great audio of Warren's set with Grace and Honky Tonk Woman . . scroll about half way down the page - also links to iPod ready downloading 

WH set:  http://panicstream.net/streams/warren_haynes/2011_05_20/player.html 

also GPN's set http://panicstream.net/streams/grace_potter/2011_05_20/player.html