License to ChillAmazon. com Country music's infatuation with the puka shell rock of Jimmy Buffett has been one of the genre's less fortunate indulgences. Most of Nashville's hat acts do little more than dip their toe in the water and do nothing to build upon Buffett's signature sounds. That's why License to Chill, which features a plethora of Music City guests (Alan Jackson, Kenny Chesney, Clint Black, George Strait, Martina McBride, Toby Keith) along with Bill