Radio Disney will launch Radio Disney Country, a modern, multi-platform country music-focused network for families, this fall. It was announced at CMA Fest by Phil Guerini, Vice President, Programming and General Manager, Radio Disney, who was accompanied by country music's youngest rising stars Hunter Hayes, Maddie & Tae and Kelsea Ballerini. The 24/7 network will feature chart-bound young artists and today's biggest country hits, including Florida Georgia Line, Hunter Hayes, Maddie & Tae…