How do I get sound out of the HDMI?

Hi!
The headline says pretty much what I want to ask.
I tried to connect my Samsung LED TV to my MacBook Pro using an HDMI cable and an adaptor from HDMI to Thunderbolt (the little lightening-port). I bought an adaptor that supports sound transfer so that should not be the problem. I chose audio-in from the proper HDMI channel on my TV but the sound is still coming out from the laptop and the TV says nada...
Anyone have an idea what I might missing?
Jonas

eww wrote:
tjk: I think the quoted message simply indicates that there is no output volume control provided within the computer when the HDMI connection is the selected output device. This standard message appears because the audio signal sent via the HDMI cable is digital, not analog. When the audio output is digital, whether it's via mini-Displayport or a mini-TOSLink connection to the headphone port, the volume is always controlled externally — by the TV set, amplifier, receiver, or powered speaker system to which the signal is sent, not by the computer. A digital audio signal contains no volume information. The device that converts it to an analog signal and relays it to the loudspeaker(s) must provide the volume information.
Thanks eww, I was not aware of that. Makes perfect sense.
Poor, I'm not sure where that leaves us, but if the TV is on and the volume turned on/not muted, and still no audio coming through, I'd try a PRAM Reset and an SMC Reset:
PRAM Reset: http://docs.info.apple.com/article.html?artnum=2238
SMC Reset: http://support.apple.com/kb/HT3964

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