Displayport to hdmi to TV.  No Sound

Using a Displayport to HDMI connector and HDMI cable to connect  my MacBook Air to a TV.
I Can twin the displays in Preferences, but no sound from the television.

Try this:
Applications>Utilities> Audio MIDI setup > Right click your TV/HDMI output > Select as output device *****If this option is not available*********> Click the Gear icon at the bottom left > Choose Create Multi-Output Device > Make the HDMI your Output source > After creation it will show on your list of outputs--Right click your multi-output device and choose as the output.
Voila your TV is now pushing sound....

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    ALCON,
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    Dear all,
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