I did you one better. I took the damn thing out, trying to plugmy ipod in. No Aux plug at all. Damn... However, I would recommend an iTrip. It is the FM modulator specifically for the iPod.
http://www.griffintechnology.com it works very well for me.
'03 H2 Sunset Orange No mods
'03 BMW M3 Convertible
'02 BMW M5