I found this today on BMW internaional AG website, It says for model years up to 3/07
Here is the description:
BMW Advanced DVD system*
Comprises two 7-inch colour monitors built into the backs of the front seats. A 6-slot multimedia changer for playing DVDs, audio CDs (incl. MP3 format) and viewing digital photos is built into the luggage compartment (alternatively, the multimedia changer may instead be fitted in the rear of the passenger compartment). An AV socket also allows the connection of a device such as a games console or a video camera. The tilting monitors help to provide a brillant picture, are nonreflective from every angle, and can also be operated separately. The system comes with two cordless stereo headphone sets and two infrared remote controls. Dependent on the equipment package chosen, audio can also be output through the BMW radio loudspeakers, with video playback an the on-board monitor.

Installation durationon request

Available forX5 up to 03/07
Anyone ever heard of this, and know if it will fit a 2005?