Not sure if this helps anyone, or is a glitch - but, you can pause the game by pretending you are going to build another factory (if you can afford it), and then, instead of actually placing the factory, you can add orders to the queue... before canceling the factory purchase. Note: I like that I was able to look at the available orders and plan ahead (which you can't do with the regular pause, due to the big box covering most of it), but I was *surprised* that I could actually issue orders.
pretty neat idea, but 3 problems:
1. There's very little difference between bronze and perfect.. by the time I get bronze on most songs, I might as well go for the perfect, I hardly saw gold/silver.
2. The synching was hit-or-miss. Generally felt like I had to "play" a little ahead of the song.
3. On some songs, my computer can't hold down enough keys at the same time - so I couldn't get all perfect if I tried.
The game is most likely NOT broken. The differences are... different each time. My guess is that there's probably 8-10 or more *possible* differences for each level, of which, it alters 5.
 "Building Rush"){kind=icon}
 "Balance Balls 2"){kind=icon}
 "Super Crazy Guitar Maniac Deluxe 2"){kind=icon}
 "5 Differences"){kind=icon}