Odd Clunking Noise????
 

At low speeds (1st gear mainly, halfway through 2nd) the front drivers side wheel/suspenion is making a clunking noise. Once past about 30mph the sound stops. The car does not shake at all, just the clunking from 5pmh to around 25mph.
If not a suspension part, would it be the diff(s)? This is my second AWD car, but never had this issue. I am going to take the car to an Audi shop here in Atlanta Tuesday after I vote, but I want an idea before I get to the shop.

The car is a 2002 Audi A4 18T Quattro w/ 69k miles. It has the Sport Pack.

Any help is greatly appreciated.

possibly a control arm.