Comment 5 for bug 597472

You don't need to refresh the downloads page, it uses javascript to update the progress bars.

The only thing that I agree you with is about the paypal page not having a way to get back to the music store. We'll see how we can solve this, but we really don't want to be showing back/home/forward buttons, then people would think they are in a browser, when they are not, since it won't behave like a web browser