Enable TV speaker as well as ARC/Anynet External Sound

[artty]

Hi,

I have a UE40D6530. I really want to mount it on the wall and use the internal speakers as the centre speaker and my HT D5100 for the surround. That means I won't have to have a centre speaker on the wall too.

Does anyone know the hack to enable this on the TV (it's currently greyed out in the menus)

Thanks,
Artty