I installed the AAI-NIS and it works like a champ. I already had the XM Commander installed and I was using the built-in FM modulator. Now with the new unit I have the XM Commander and my ipod mini hooked up direct. I ran the wire from the AAI-NIS through the dash and under the gear shift console and up near the passenger seat. The only exposed wire is from the ipod to carpeted area right next to the seat.
I bought the Belkin TuneDok to hold my mini in the cupholder. For the ipod cable, I used Monster's ICable and for the XM, I used a Dual Twist RCA cable. Install was easier than I thought.

Thanks gerver for giving us the heads up on the SAT to AUX adapter.