Cynthia Littleton Business EditorRedBird Capital Partners has taken a majority stake in Talent Systems, the casting software and audition network run by entrepreneurs Rafi Gordon and Alex Amin.Talent Spotlight operates a collection of casting-related software and audition network services, including Casting Networks, Spotlight, Cast It Systems, Casting Frontier, eTribez Casting Platform and Staff Me Up. RedBird is a private equity firm run by former Goldman Sachs partner Gerry Cardinale that focuses on media, sports, consumer and financial services sectors.“RedBird’s extensive track record of building long-term, successful businesses coupled with its deep expertise in the entertainment industry makes them the ideal partner to scale Talent Systems,” said Gordon and Amin, who are co-CEOs of Talent Systems.