Audio through HDMI (15"retina late-2013)

Hello,

I'm trying to watch a movie on my TV from Netflix on my Macbook Pro, I can get video but no audio. I am using the HDMI port with about a 5' cable. I have trying opening the audio prefs, but the TV doesn't show up as an output option. I have tried going to the sound effects tab, but no luck there either, nor with audio midi options. My Mac specs are: Refurbished, 15" Retina, late-2013, 10.9.3, 16gb ram. Any other info needed? Thanks for any help you can offer!!

Cheers