Let me start off I tried using the search function but I could not find relevant information particularly pertaining to the iPhone 4s. I just purchased a 2005 Prius with CD player but no AUX input. I am looking to hook up my iPhone 4s in some form to listen to Pandora Radio. Anyone out there have experience hooking up their iPhone 4s or could point me to a thread that could help me out? I would really appreciate information on the options that are available, prices, and sound quality of each option. Thank you ahead of time!