I'm ready to pull my hair out with this. I installed the game. I bought Cherub Rock. I walked through the directions about six times now for the Mac. The songs show up in my list in the game. When I select a song to play, it just hangs. I can alt+tab, I can play strings on the guitar and hear them come out of the speakers, but the screen never changes, the song never starts, and I can't do anything except make the game Force Quit. It's non responsive. What in the world am I doing wrong here? I followed this guide: http://forums.smithyanvil.com/viewtopic.php?id=15909, and then I followed this guide: http://forums.smithyanvil.com/viewtopic.php?id=15909 I'm completely stuck and out of ideas. Any suggestions please?