DisplayPort to HDMI Adapter doesn't play audio on Samsung TV I can't make my MacBook Pro mid 2009 play audio on my Samsung LCD TV. I am aware that only recents MacBook Pro have audio out through the Mini DisplayPort and mine doesn't have it. This is why I bought an adapter that includes digital audio.

I can see the video on the TV but can't hear anything, the sound is still going out of my laptop.

I tried to go in "System Preferences > Audio > Output" but I can only see "Internal Speakers" from here.

Do you have any idea what did I miss here?
Thanks.
Without resorting to AirPort or other networked setups, your only option is probably to just use a 3.5mm jack from your headphone port, which would unfortunately only give you stereo audio.