By entertainment I mean of the audio/visual type ;-) As an example, I have an ACE TV and a Samsung 5.1 Home Theatre System. The HTS tests fine on all speakers, but says ARC not supported when trying to get 5.1 sound with TV broadcast signals. The problem is that I think it can be wired with the RCA jacks instead of the HDMI cable, but the cable company set top box is using all of the RCA jack ports. Any suggestions? Thanks in advance.