G62-a50sf : (only) audio out over HDMI?

We have a G62-a50sf notebook at my gf's place that we'd like to use as the source for a (somewhat) audiophile audio set-up.  One possibility to get better-than-headphone-output into a good receiver AND avoid using a separate DAC would be to feed the digital audio output over HDMI to the receiver.
The question I'm hoping to get an answer to is: will this be possible while retaining video output on the laptop's own screen?
thanks in advance,
René

Sorry, but your Mac doesn't send sound over HDMI, only mid-2010 and later MBP's send sound (and even then some require different adapters).  Yours is a 2009 MBP, so only video will go over the HDMI cable.  You will need to run audio from the audio out to your TV or digital audio out from your optical audio out to your receiver.

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