So yes we can get some HDMI audio splitter but there are so many I won't guess what you have in your country. See if you can find one with analog outputs. If not, they usually have optical that you run to a second box that converts optical to analog.
I am streaming netflix from pc through chromecast2 to samsung 60" UN60EH6003 with no output jacks, and trying to output audio to remote speakers through a receiver with only RCA jacks. Any suggestions...

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