music is my profession and my advise to you is this ....
Put as much work as you can into the visuals! If you have a stunning looking game, you should be able to attract a gifted musician who can create "the right sound track" for your game.
If you can show something special, someone out there will take some time and make you something worth while. Many musicians are in the same boat as you are. They are studying audio engineering and can't find projects to work on.
If you live in a big city, I'd suggest posting on craigslist or the university campus bulletin board.
Especially if you have a website up and running which provides all the information someone needs in order to decide to help you ... or not.
Take your time, look around. There are so many musicians out there and some of them have a home recording studio but no one to record.
Be creative and go with someone who will lift your project up a couple notches.