The TV has to be on and set to the HDMI input from the laptop. Then we right click on the toolbar speaker icon and select Playback Devices. Select the HDMI output that shows up for your TV.
I have my HP laptop hooked up to my tv through and HDMI cable. Everything with will play fine. But I can't get sound from itunes. If I unplug my headphones sound comes out of my computer still. But not on my tv. How can I get itunes to work on my tv?