Goto Ebay and type Elsawin. I have 4.10 for Audi, Skoda , VW and Seat. It's like having a Haynes manual for every car these manufacturers made for the last 20 years.
This is what the dealers use for their information and it's very good. I paid about £10, the amount of information is massive, comes on 2 dual layer DVD discs and a normal DVD.Just checked the size of the folder and it's over 20GB and over 400K files.
You can get just Audi if you want.
Karl.