Martina McBride is getting into the television talent contest biz. The singer has signed on to be a judge on a new reality competition series called “Second Chance Stage,” produced by Chip and Joanna Gaines on their Magnolia Network (formerly DIY Network). The show will feature singers, dancers, comedians and more showing off what they can do in front of a live audience and panel of judges. Alongside McBride, the other judges include actor Taye Diggs and “SNL” cast member Heidi Gardner. Former NFL player and sports broadcaster Emmanuel Acho will host the show. The entire series has already been filmed, and will premiere this fall.