I double checked and I believe tls49 is correct. The TV is a Sony KDL-50W800C and the manual talks about HDMI to receiver using ARC, but it is an HDMI in, not out.
There is a digital audio out (optical) so I can use the FiiO that dbtom2 recommended
Sorry for all of the confusion, it should be obvious that I am not up to speed with current technology - hell I still use tubes :)