Hi. Just got an A4 TQS, rear speakers aint workin, and when i look in the boot, hangin down a few inches, is a cable with a blue female connector on the end, and 8 slots in it. Whats this for? CD changer? (it doesn't have one see). I have the tape player which does all this high volume ********, can i just stick a CD player in it? Just a standard one if you like, not an all singin all dancin one. Any info would be greatly appreciated, as im about 3 days away from smashing in into a wall. P.S. Whats all this BOSE malarky and do/would i have it? I know it makes my ears ring when it decides to go full blast! 
