A producer who allegedly sampled a song without permission is being sued by rapper Lil Wayne. A lawsuit filed last year against Lil Wayne accuses him of copyright infringement, saying he failed to secure permission to sample folk singer Karma-Ann Swanepoel’s song “Once” on his track “I Feel Like Dying.” Wayne’s lawyers countered with a suit of their own last week, saying Rebel Rock Productions Inc., of Coconut Creek, Fla., produced “I Feel Like Dying” and was responsible for obtaining any necessary licensing agreements. As of now Rebel Rock has not responded to Lil Wayne’s claims and doesn’t have a lawyer named in court records. According to Yahoo news a federal magistrate ordered rapper Lil Wayne last month to turn over financial records for his Grammy-winning album, “Tha Carter III,” to Urband & Lazar Music Publishing, which published “Once.” “I Feel Like Dying” isn’t a track on “Tha Carter III,” but a lawyer for Urband & Lazar argues that Lil Wayne promoted the album by singing that song in concert and allowing fans to download it for free on his Web site.