hi,
first, tell me what engine you have on your audi. because if you have 2,0, you can not install the LED. then, you can not control the LED from MMI buttons, only the daylights. but you can controll it from foglights button.
here you have a link to audisportiberica where you can find the man that i wrote you about.
Audisport-Iberica (Powered by Invision Power Board)showtopic=97553&st=135
you have two way to install the LED:
1 when you make the connection on the foglights wires
2 when you connect it in S6 style
the LED's you can easy find on e-bay. if you need something else, i'll be happy to help you.
f