I am currently looking to add a aux to my 2003 G35 sedan to listen to my mp3 player, not an i pod. The closest component i could find is the PAC AAI-NIS2 Auxiliary Audio Input (Nissan & Infiniti). Will this work for my car? The web site says i need to have a SAT button which i do not. I have an in dash cd changer. Is there any other options for me to purchase to add an aux to listen to my mp3 player?