Help!!! Audi A4 2.0T

I was driving down the freeway when the OIL PRESSURE warning light turned on. I pulled to the side and checked my oil level but it was fine. I kept driving and the car turned off once, but started back up. As I kept driving again the car made a weird noise and completely shut off. It won't start back up. It seems like it's not getting any compression. I have a feeling the oil wasn't pumping to the heads or something. Any idea what it might be and how much to fix? It's a 2005 Audi A4 2.0t