Garth Brooks' two-CD "Double Live" (Capitol Nashville) was certified for U.S. sales of 14 million copies in a January accounting by the Recording Industry Association Of America (RIAA), making it the best-selling live album in history. Brooks, who recently won the People's Choice award for favorite male musical performer, last year became the first solo artist to sell 100 million albums in the U.S. when "Double Live" was certified for sales of 13 million copiesw