I lost my iPhone 3G in my own house, is there a way I can have it make a noise?

[Mike]

My little brother had his friends over and they were messing with my phone none of them had it when they left and now I am wondering if I can have it make a noise to notify me of where it is. I used a GPS tracker to locate where it is and it is in my house I just can't seem to know where, I've searched high and low. Please help in my epic failure xD