Aux adaptors

[GingerPete]

Hi all, I'm new here so apologise if this had been spoke about before

I have the audi concert stereo without the cd changer input. Is there any lead on the market I can buy to have an aux input or do I have to change the stereo. 

Any help would be much appreciated

Thank you

[A3_Ben]

https://www.amazon.co.uk/gp/product/B005FMY8CE/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

^^ try this.. seems expensive but I'll post a photo of how mine's wired up shortly but simply press the 'CD' button and connect to the AUX from this kit - works first time and very easy