Scraping noise from front passenger wheel

What might be causing this scraping noise? A couple days ago my brake light turned on in my dash. My brakes have felt a little splotchy since I bought the car 3 months ago. I didn't feel I was having any problems with my brakes though. Then yesterday, I went to a restaurant who's parking lot was not what I would call flat. I parked nose first pointing down hill on pitch of about 10 to 15 degrees. The car is automatic, I applied the E-brake just to be sure the car wouldn't have a problem with rolling. When I got back into the car, I put it in reverse, drove back a car length before putting it in forward. Put the car in drive and started to go forward, and I heard a loud scraping noise coming from outside. (I'm not sure if it happened while in reverse as well) Over about 30mph it quiets down a little. Under 20mph its very apparent. Braking to zero, its very much there, and as the car slows down, the scraping is longer and more drawn out. I stopped in a parking lot with my girl friend to have her drive it around. It's definitely coming from the front passenger side wheel. I cant hear it from anywhere else on the vehicle as loud as I hear it from there. The noise also appears to happen in the same exact location. Using the valve stem as a marker, I would say it scrapes from 11 o'clock to 5 o'clock. What could it be?