I have XM in my 2004 non - nav stereo. It's and option on the "Mode" menu and is integrated with the stereo (can control channels, see song tags, etc.).

You need these 2 things:

XM Satellite Radio at MyRadioStore - XM Radio Receivers - Refurbished XM Direct XMD1000 Universal Tuner



http://blitzsafe.com/catalog/bmw/bmw.../prod_140.html


Antennae install into the spoiler info:
http://www.xoutpost.com/articles/x5/...tallation.html

There is also this kit at European Autosource:
eas - 714.369.8524 | XM Direct Satellite Radio Package for BMW & Mini

I'd do some web surfing to find best price on the parts, but easy to do. All my equipment is mounted in the rear of the car and not behind the stereo.

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2007 328i Sport, Monaco Blue
2011 X35D - sold -Space Grey
2004 X5 4.4i - sold - Kalahari Beige
2001 X5 3.0i - sold - Pearl Beige
2006 325i Sport, Sonora Beige
2000 323i - sold - Sienna Red