FILE - This April 8, 2013, file photo shows Tim McGraw performs at ACM Presents: Tim McGraw's Superstar Summer Night at the MGM Grand Garden Arena in Las Vegas. Curb Records has sued Tim McGraw and ... more 
FILE - This April 8, 2013, file photo shows Tim McGraw performs at ACM Presents: Tim McGraw's Superstar Summer Night at the MGM Grand Garden Arena in Las Vegas. Curb Records has sued Tim McGraw and Big Machine Records in federal court, alleging copyright infringement and breach of contract. (Photo by Al Powers/Invision/AP, file) less 
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Associated Press
Tue, Apr 30, 2013 12:20 PM EDT