Retro City Rampage, you can at least ease that burden a bit by checking out select tracks from the game's soundtrack right now, free of charge.
This Soundcloud page has a few of the game's tracks for streaming or download, as well as some remixes that were the product of a recent contest. We're not sure how long it'll be available, but said page says to look for the full soundtrack in January or February 2012. We've contacted Brian Provinciano, the game's creator, who told us that these tracks will be available indefinitely. The full soundtrack is being printed right now, but you'll have to (obviously) pay money for it.