How to play my iPhone 5 in speakers which uses the old iPhone docking station?

Since the iPhone 5 uses a different dock connector I was wondering if there was some sort of extension that allowed you to changed this? I searched but couldn't seem to find what I was looking for, though it's possible I was searching for the wrong thing since I'm actually not sure if it's called an extension.

You need to buy an adapter, you can get them of ebay. Http://www.ebay.co.uk/itm/221225395309

if the link done work search 8 to 30 pin dock connector