Disappointing airplay for the first two singles from the new album by the Dixie Chicks exposes a deep -- and seemingly growing -- rift between the trio and the country radio market that helped turn the group into superstars. "Taking the Long Way," due out May 23, is the band's first album since singer Natalie Maines sparked a major controversy in 2003 by declaring that she was ashamed to hail from the same state as fellow Texan President George W. Bush. Radio boycotts ensued, and many fans abandoned the band. The first single, "Not Ready to Make Nice," peaked at...