My car doesn't have an oxe cord or cassatte? Is there another way to listen to music?

I'm trying to attach my Iphone to my car to listen to music it has neither an oxe cord or a cassatte in it just a CD player. I don't want to have to pay to get a completely new radio in my car with a oxe cord port. Is there another way? Is the item in the link legit?

http://www.ebay.com/...1742537532

Bluetooth or try the radio? Other than that there's really no other way unless you take a mini portable speaker with you & connect it to your phone & just carry it in your car LOL

How about an AUX cord?