It's a measure of the new exile tolerance that a heralded band from Cuba is headed for Miami, and -- at least so far -- no one is talking about protests, pain or politics. ​The Septeto Nacional made its last U.S. appearance at the 1933 World's Fair in Chicago, where it won a Gold Medal by spreading the Afro-Cuban music made popular in the 1930s called "son." That was long before the Buena Vista Social Club Ry Cooder made famous. Now, they're not only going back to the Windy City, but the