Well....you could take it to Audi garage and ask to have it fixed, but they might introduce a whole load more when they refit the dash, or you can live with it. It's a risky business messin' with the rattles....
Try a dab of WD40 on the tip of a cotton wool bud and rub around joints, panels etc. May work, may not!. Garages use silicone spray so I presume WD40 would be just as good.
Steve - 2002 1.4SE petrol, Silver, black/black interior, Then an identical replacement 2003 A2. Now a Toyota Corolla 1.6 T-Spirit
ddkeyprogrammers
I had this problem on my Sierra, a squirt of WD 40 cured it until it dried out in the hot weather, it is an instant cure when you identify the correct area