MAC Mini video via HDMI & audio via USB?

Hoping someone else will have tried this. If I'm playing a YouTube video, can I send video via HDMI to a TV and at the same time send audio via USB to an external DAC? OR does the HDMI connection shut down outputs from the other ports. Thanks in advance.
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I've never used it with YouTube but I have done this with JRiver. Just send the audio to the USB in audio setup and in midi setup. The HDMI will take care of itself.
Thats the set up I have on my Mac Mini. HDMI to TV then USB to my DAC. You can set this up through system preference in your Mac.
Hey folks - thanks for the replies. OK! Sounds like it will work. can send an optical digital signal to your DAC's Toslink input ...from your Mac's optical output ( it's in the headphone jack! ).