XC90 D5 Sport BJ 2007 – iPhone via Aux port

Hi, I’m new here and would like to introduce my DickeIch and ask for help when connecting my iPhone to the audio system. Since Friday I drive the new car and am enthusiastic. Only the turning radius and the simple audio system without a CD changer is in need of getting used to. I was spoiled by my V40 with Super Premium Sound System with Subwoofer, etc. Anyway, I want to connect my iPhone, on which I have a lot of music, to the system. About Bluetooth ha I already connect the phone to the installed Volvo hands-free device. That works fine. The transmission of the music should go after this forum via the AUX port. There are now the questions: 1. Kensington Liquid Aux Adapter (is there still the one?) or Kensington 2-in-1 Car Charger and AUX audio cable. 2. What is this cable that hangs out in the CD box. My iPhone does not respond to it. LG Cappuccino23