Stereo & Electronics - Bluetooth help request

Hullo, I've got a 2002 Ws6 with the factory Monsoon system. I've done some research and apparently it has the capacity to utilize an external multiple disc changer. I was wondering if there is a bluetooth device that would allow me to utilize these connections in the Monsoon unit. (If that makes any sense)

Basically, I want the car to have blue tooth capabilities and have the sound going through all speakers without having to change the factory head unit (not that little obsolete Parrot one speaker bluetooth device.) Is there a plug and play device that would allow me to use the Aux input for a bluetooth interface/device? And if so are there any that you'd recommend?

parrot makes some that integrate with factory stereo and have plug and play harness

However, they don't have anything for the 2002 cars. I just looked. The bluetooth device isnt' the expensive part, it is the adapter to plug into your vehicle. An adapter for my 2004 truck is $300.00 and the device is another 100-200 depending upon what you buy. For that, you can get a radio kit from DD mods or Kee Audio and have bluetooth and a kick ace DVD player for your vehicle. Just sayin...