Eminem files suit against ringtone companies Eminem is going after Colorado-based Cellus USA, Georgia-based FanMobile, New York-based Nextones.com, New Jersey-based MyPhoneFiles and New Jersey-based MatrixM LLC for selling his music as cell phone ringtones without his authorization. Since ringtones are now big business, you gotta be sure to get your cut.  ¶ 7:53 PM