Help please!

I just picked up my 2009 E70 X5 (used with 4K) and with the rear DVD entertainment system and Premium Sound with the DVD/CD changer in the dash glove box. The glovebox - between the front seats - has the AUX plug but no combined AUX/USB plug.

My question is - does anyone know if you can get this part retrofit? Does the truck come standard with the OEM wiring installed so that the AUX/USB port can be added and simply plugged in? Or is it a new run from the back of the head unit/radio?

The dealer(s) here in Canada are saying that they cannot even order the combined AUX/USB plug for the glovebox - between the seats. I am also hearing that I would need to unplug the DVD/CD player in the dash glovebox to have the AUX/USB plug (between the seats) activated?

All this to have the IPOD titles on the NAV screen...

Any input would be greatly appreciated. Thanks.