How to transmit audio from MacBook to TV?

I hooked my macbook up to my sony plasma television and I have the video figured out perfectly. I need to make my TV play the audio being played on the laptop so I can watch movies on my TV with sound. I also have an HDMI DVR hooked up to my TV just in case I can use it to transmit the audio. I have just about any cord/cable I can use! Thanks!

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