Alpine CDE-9881 CD Player "zune headphone jack" Questions

headphone jack on my Zune. Now the problem is that i do not know how to access the Auxilliary setting, i was told to look in my manual, but i did not see anything helpful there So if i could just find

...headphone jack, I'm guessing it does, then use the same method and use the sat receiver instead of a ipod or zune or whatever you use. But you need a switch so you can go back and use the cd player, ...

...headphone jack. (I have an extension chord with two "male" ends on it, so it the adaptor would allow it, I could plug one end into the adaptor and one end into the mp3 player.) Any insights? Thanks, ...