This won't work for me, I just have a black screen when I try to launch the demo,
I can hear some drum playing at the start, then silence.
We found this issue a little while ago. It turned out to be a problem with missing or incompatible video codecs and our intro clip. For now we've solved it by having the video just not play for people with the codec problem and the screen staying black for a few seconds until the video would end. After that you should be sent to the main menu.