That is a new feature I don't have on my 08 CRD. I wish it did. I did find this Note on the wkjeeps.com site.
Note: iPod support is only available today through Model Year 2009 radios via a serial port out the back of the radio. It is not currently an upgrade for Model Year 2007 and 2008 radios.
You might see if you cable can be plugged into the back of radio somehow.
2008 GC 3.0L CRD Limited, ProVent Installed, Clear Bra, Scangauge
1999 GC 4.0L Larado
1985 Jeep Larado 4.0L Sold