Former New Line Cinema co-chief Bob Shaye recently took a two-year break from the Cannes Film Festival, but is back in town this year to tubthump his latest directing project, Ambition. The story, Shaye tells me in the video above, is about a young woman “who is extremely ambitious as a musician and she gets herself into really, really big trouble and then there's a twist in the end.” Shaye and his Unique Features partner Michael Lynne are producing the previously-titled G…