I found that it worked somewhat for me. I went into the "studio" and the screen went blank. It took maybe 45 seconds before the mix options appeared, but despite the wait - it worked fine. After I saved the mix and tried to leave, my screen went totally blank and would not return me to the monorail train - the screen stayed blank. I later went back, caught a monorail train, and was able to play my mix. I collected my 10 credits but then the monorail no longer seemed to stop at any stations - I was sort of in limbo with no way to exit by walking. It does seem a bit buggy at the moment.