I just bought my X5 about 3 weeks ago and just bought the factory changer from my local dealer at cost.
It works perfectly with my '06 X5 4.4i with v26 software. MP3 cd loads up, show song title, album and artist name and goes past 99 songs.
The part number for my changer is 65126977768 which I was told replace all earlier version of the cd changer. It was a simple install and im completely happy with it now since i dont have to add my ipod to play my music
