For whatever reason, the buffalo beast blog is down. Most likely because of the flood of people heading there.
The interview is a prank call of Gov. Walker who thinks he's talking to David Koch, the financiers of his Governorship and who also helped logistically getting out the vote and all. Walker basically wrote in his budget a section to hand over WI utilities with no contracts over to Koch for a payback.
Here is the audio for anyone interested.
Here is the original Beast's blog entry, Buffalo Beast