Right click on Player and Link To Sony TV. They will play the same thing, but they will not be totally in sync. Assuming the Sony TV is DLNA, you may need to adjust the DLNA settings to play depending on the format.
To link two zones, just drag one onto the other. If anything is playing in either zone, both should begin to play it in a few seconds. Anything you choose to play in either zone will now play in both. More than two zones can be linked.