This is fishy on a number of levels. First: Why call Headline News to ask about something that happened on another network? I'm guessing that if this call wasn't entirely staged, they bounced around random numbers at the CNN Center until they got someone to say what they wanted.
Jay777 has it posted on his site with additional info http://stoptheaclu.com/archives/2005/11/23/x-intention-audio-tape-confirms-it/