I would recommend either the OEM aux cable (it really is an easy install) or a DICE kit.

Tom @ EAS is a great resource. I have the predecessor product (ice link) in my e46.
http://www.europeanautosource.com/in...5863b6cdf79616

In our 2004 X3, we had the aux input installed. It's < $50.

Attached Images

 

__________________
David

Macan Turbo / 997.1TT (gone) / e83 (gone)/ e46 M3 / e90 335xi (gone)/ Sienna XLE Ltd
B7 A4 2.0T CVT (gone) / Pilot EXL-RES (gone)