Stuart lister

Hi there, I'm new to this site as well as Audi. I have recently brought an Audi A6 allroad (2008), I love the car and it drives great. Just checking if there's anything I need to look our for, there are a couple of things I need to do. 1st fit satnav, there doesn't appear to be a DVD drive in the luggage compartment so i need to source one or fit an aftermarket head unit ( still thinking about that). The other thing is there is a knocking noise coming from the front , think this might be anti roll bar linkage rubber as that was an adviser on the last mot.