99 A6 leaking oil

Can anybody help with my oil leak.

I recently changed my oil and now I have a leak somewhere. It's not from the pan, the drain plug or the filter but their is a lot of oil coming out somewhere.

If I drive a short distance on a cold engine there is virtually no oil spill, but the warmer the car gets, the more oil starts to drip and smoke from the burning oil on the engine block. There is predominantly two main spots of oil, but it drips from everywhere when idle. The two main spots would be just off the sides of the oil pan, but the drips are from above the oil pan somewhere. I cleaned the entire underside and as much engine area as I could with brake cleaner but I can't tell where it's coming from, since it only starts spilling after I start driving and in that case the air flow sprays it all over.

Any ideas?