Reason it can't run at 60 is that scroller goes 6 pixels per 50Hz frame. If I run it at 60Hz then the scroll goes too fast and finishes before the music (in fact, adding my own credit fux0rs that too). I think it's brilliant of the original demo that it's so ad-hoc "bye the way...", but the scroller finishes right when the music does. I should have left it alone.
So, there's no way to make a 50hz scroller scroll at the right speed on a 60Hz screen. Not something we should argue about, just something we have to live with.
Is this not a problem with all the demos you convert? All the timing is frame-based, except the music.
Jim