ST. PAUL, Minn. -- Eric Clapton is playing "Cocaine" in concert again. The recovering drug addict and alcoholic, who founded the Crossroads Centre addiction recovery center on the Caribbean island of Antigua, stopped performing the song written by J.J. Cale when he first got sober. "I thought that it might be giving the wrong message to people who were in the same boat as me," Clapton recently told The Associated Press. "But further investigation proved ... the song, if anything, if it's not even ambivalent, it's an anti-drug song. And so I thought that might be a better way to...