Lizz Winstead is off the air at Air America Radio. The brilliant comic, who co-created Comedy Central's "Daily Show," left the liberal network as a host last week. Word is her departure had nothing to do with the arrival of new CEO Danny Goldberg, the recently ousted founder of Artemis Records and author of "Dispatches from the Culture Wars." "This was in the works before Danny," a source tells us. "We wanted to take the show in a different direction," says an Air America rep. "We thank Lizz for her service and dedication." Winstead couldn't be reached.