A hip-hop impresario will likely spend the rest of his life in prison after a jury convicted him yesterday of drug-trafficking, money laundering and possessing a submachine gun.

James “Jimmy Henchman” Rosemond, 47, once managed singers Brandy and Akon and owned residences in New York, Los Angeles and Miami. But a Brooklyn federal jury found that prosecutors proved he was actually a narcotics kingpin who used his business as a cover to transport huge quantities of cocaine in music-equipment packing cases from Los Angeles to New York.