Hi guys. I have an A3 2004 with a Bose system in it that has the 6 CD loader in the head unit. The only one that loads is the first, no 1, CD slot BUT even this sometimes wont load a CG. It just makes the sound of loading and then eventually comes up Error. Then on other occasions I can put a CD in and it plays instantly, other days, can't get anything to play. Any thoughts please and where on earth can I buy another one please xx