Here is a link to the instruction manual for the peripheral electronics unit. It is identical to the Nucleus.
http://peripheralelectronics.com/per...structions.pdf
If you have a NAV screen, here is what you need to do:
First, the "preset station" buttons are used for functions and will be referrred to as Button #1 thru Button #6.
I assume you have figured out that button #1 toggles between ipod, XM, and aux and that you are able to select ipod/nucleus and hear the ipod music.
The next button to use is #6. It will toggle between playlist mode, album mode, artist mode, and finally a mode labelled "4 to NAV ipod". If you press the #4 preset button, you will now be in Advanced Mode and control the ipod from the NAV screen and see the title and artist.
To go back to manual mode/ipod control: hit button #6 until "5 to manual" is displayed. At that point hit preset #5 and you will manually control the music from the ipod, but lose the ability to see title and artist.
Hope this helps.