Step right up and place your bets on how long 'til this one's outta here: Superb (especially for KPTM) weekend anchor Amanda Mueller is now listed among those searching for a better gig in the Medialine Talent Showcase.If she could be persuaded to stay in Omaha, we can think of a number of slots where she'd fit quite nicely:• KMTV's weekend anchor desk, which has an open seat (two if you count