I've been looking myself for some way to connect my Sirius Stiletto directly, and I came across the same company. I was told that the CD/AUX button works different when you get something connected to it. I'm still trying to find reviews to make sure it works before dropping the money on it. Right now I use the FM output from my Sirius but the volume is very low. That company was recommended to me by a friend who installs stereos on the side and I normally trust his advice. Let me know if you have any luck.