That's odd. Unfortunately I don't have my new motor for a few weeks yet so I can't give a detailed description of the procedure yet.
I can't see BMW excluding it entirely from the US market. It has to be down to the individual options specified. Your options do differ from ours (eg you have different packs etc) but mainly what comes with what rather than options not available at all.
I'll dig out the handbook and see what that says. It's a generic F3x handbook so should detail the function even though I don't have it at the moment.
And surely you can still play DVD movies if that floats your boat? Even my E91 did that. Handy for the kids during those hours you spend waiting for the other half while she's shopping...