SIOUX FALLS, SD – Townsquare Media is shaking things up at its Sioux Falls cluster, as it swaps out several formats on the dial, and rebrands “South Dakota’s Country Leader” KXRB on FM. KSOO-AM 1140 will move its News/Talk format over to AM 1000, replacing Classic Country KXRB, which moves to 1140 AM. Brandon outlet…