ipod or aux input for 2004 accord w/xm

does anyone know of a module that i can use to give ipod or an auxilary input for a 2004 honda accord with the factory radio and factory xm satelite radio? i have done the same car before without factory xm and it was very easy(there is an empty plug on the bottom of the factory radio of which i ordered a module from pie.net that just plugs right in). but the one i'm doing now has factory xm and the plug on the bottom of the radio is not there. also the one that i'm working on now has a 6 disc changer built in the radio and has no external cd changer. if anyone knows another web site to check pls let me know. thanksalarm king