Rhino Entertainment announced a new acquisition deal that includes the rights to the legendary Jefferson Starship and Starship catalog, as well as Grace Slick’s solo albums, selected Jefferson Airplane and Hot Tuna releases, Paul Kantner and David Freiberg solo recordings, and other gems from Grunt Records’ vault.  Rhino promises “a plethora of physical and digital titles” on the way. The agreement includes music that spans more than 20 years: from Jefferson Airplane’s Long John Silver (1972) to Starship’s 1991 compilation Greatest Hits (Ten Years and Change, 1979-1991).  In those twenty years, the Jefferson Airplane…