I have a new Samsung 6 series Tv UE55KU6470, the problem I have is that the three HDMI ports are in use and the optical output is used fot the Samsung soundbar, if we listen to music off "Youtube" the soundbar is not loud enough, so I want to put a audio output to my seperate sound system, the Tv dos not have a headphone socket, "Samsung" have told me to just swap over a HDMI lead each time I need more sound, This Tv will be recessed into a wall so to access the rear will be a pain, so as posted, can I use a HDMI split lead, so one lead is to my "XBox one" and the other to my Amp, both using a single HDMI port from the TV and any problems with cross feeds etc. Thanks Nos