Former American Idol Juniors finalist and new TC Records artist Katelyn Tarver will be the guest host of an episode of the music countdown show Xtreme Video Zone, which airs nationwide on JCTV. The show will air Saturday, Dec. 3, at 3 p.m. and 10 p.m. EDT, and will repeat throughout the month. Check www.jctv.org for local stations/airtimes or to view the program via streaming video.