How do I get reciepts for stuff that got stolen?

My car got broken into and I had about 540 cd's and like 180 Dvd's.. i had a dvd player in my car. I have to come up with reciepts for all my cd's and dvd's.. i don't have them.. It was like 13000 worth of cd's and dvd's. Any way to get reciepts to say that i had bought cd's. Can i buy reciepts online from somewhere or what?