Michael McDonald is the latest artist suing record companies for a larger royalty from digital sales of his music. The former Doobie Brothers member and Steely Dan associate has taken Warner Music Group into U.S. District Court in Nashville, claiming that the company "failed to correctly account and pay McDonald for masters licensed to third-part music downloaders" -- and seeking a 50 percent royalty rate for digital downloads rather than the percentage he receives for sales of physical product. No amount is specified, though the suit makes it clear that McDonald is seeking damages in excess of $500,000. McDonald is represented by Richard S. Busch, who specializes in such matters, winning a settlement for Detroit rapper Eminem and currently representing Peter Frampton, among others. McDonald performs with Boz Scaggs and Steely Dan's Donald Fagen as the Dukes of September on August 17 at the DTE Energy Music Theatre.