[Charu]

I ran into this problem myself when I was seeing if I could play a song or two on one of my school's computers that use a mac.

The standalone... simply just doesn't want to load the song at all. It looks like it loads it, but once it starts, it ends it as if there was no chart at all in what it just loaded.

The only way I saw to get around it was actually use the browser. Surprisingly, there didn't seem to be any performance or skipping issues when I was testing the game on the school's Mac machines.