Sure. In the audio input set up menu, for example, the TV input, you should set the audio choice to HDMI ARC. But, you'll need to leave the video choice blank (---). Then the sound from the TV (such as from Netflix) will be sent to the 975.
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Main HT <> 976 <> 7200 <> Ultra-X12 <> sapphire ST2 mkII RF/LF <> sapphire SC center
sapphire ST2 mkII SBR/SBL <> sapphire SS SR/SL <> Verizon/DVR <> Vizio M70Q7 <> Oppo UDP-203 <> Amazon 4k Fire TV