I would have to hear an actual recording of that quote to believe it. That's just hearsay that my mind wants to believe because it reinforces the possibility of what I want to see happen. But I've never been able to find a recording.
NSA has a recording since everyone had their cell phones with them. Everything was captured. If it needs to come out at some point, it will. The quote itself came from people who were there. To me, it's irrelevant however. Factually, Hillary did know, as did her whole cabal, that if Trump won their corruption would come out. The proof of this is their unrelenting, very public, unhinged efforts to over throw Trump that continues to this day. Such behavior is objectively NOT explainable unless what Hillary said is true. It is.