I think the Bravia has an HDMI output as well as an input for picture and audio. You would just run another HDMI cable from the TVs output to an input on the 3808. If there is no HDMI output from the TV then look for an optical output and run an optical cable from this output to one of the 3808s optical inputs. Finally if you find there is no optical out then I know there will be at least one set of analog outputs that you can then hook up to the 3808 analog inputs.
Another option is to use an old VCR as a tuner connect the cable to it and run the analog audio output from the VCR to the 3808 and the video (composite or S-video) to the 3808 as well and let it upconvert the video signal to be sent to the Bravia over the HDMI cable. I run something like this for my system as I have my audio gear in one corner and the TV in the other corner 12' away.
