I'm still talking with Serato - will post an update once there is information worth posting. I know that a lot of people want to know the exact details right now, and there is a lot of mis-information out there, but until there is something further to announce, I can't really add a whole lot of detail to what you already know: and that is that MixEmergency isn't working with the latest versions of Scratch Live (2.4.0, and the 2.4.1 public beta).