To enable Audio from TV’s speakers and NOT from MacBook Internal speakers – Open System Preferences > Sound, tap the Output tab and select your TV as a device for sound output.
Select the HDMI port to which you’ve connected your MacBook Pro. We used the below one which is a single 6 feet cable that supports both audio and video, you can buy it from Amazon for $11.69 only. How to connect MacBook Pro to TV with HDMI If you see “HDMI/ DisplayPort Output”, then your MacBook Pro does support HDMI audio out. Under Hardware, click “Audio (Built In)”. Click “About This Mac” and then “More Info…”, click System Report. Note: Only MacBook Pros April 2010 and later support audio, but if you want to check to know for sure, click the Apple logo in the top left corner.