Hello, I have a 2006 audi A4 with audi concert radio, I want to install an aux but all I can find is conversion kits to play it instead of the CD changer which my car doesnt have. Is there other ways ?

Thanks

I'm sure you can just buy an add on which connects into the back of the radio. The new aux port then can be fitted in a slot of one of the blanking plates. 

Your best bet is to speak to your local car accessory shop to find exact pricing to have aux installed. 

The hardest part will be to connect the aux up to the steering wheel controls if fitted. 

Your other option is to fit an updated radio. This could even be to fit a bet Audi radio which can then be programmed into the vehicle. 

Hope IV helped but hopefully more experienced members can help on this matter :) 

Cheers

Steve