Hey there. I'm knew here & basically just recently got into the electronics heavily. Due to fact I have NO audio out on my Lg TV. No headphone jack, all HDMI is audio in. Both components are audio in. I have optical out. Tried to hook up sound bar found out I had no sound coming through sound bar with over the air/antenna TV ACCEPT when it's on the snowy channels, works fine. I have a Roku 3 box (older version) which is plugged into the TV HDMI in via HDMI cord. When I am on the Roku it plays everything I have on it perfectly. Also, all I can do in my Auto setting is turn the speaker on or off. There is NO NONE.. place to switch anything else. No I can't switch toDolby, RCA,NOTHING...So saw an article somewhere on the web as I was researching can get a manka 4K HDMI Audio Extractor Converter Input HDMI To HDMI Output Optical Audio SPDIF and 3.5mm Stereo Audio Extractor for Blue-ray PC Xbox One HDTV & run the HDMI from the extractor's "HDMI OUT" to the TV's "HDMI IN." Then take an optical cord & run it from the extractor's "OPTICAL OUT" to the sound bars "OPTICAL IN." WAH LA... SOUND? Right?? Or no? ??Please can somebody help please. I've tried my butt off for a week. Like I said I knew NOTHING about anything audio, video, sound, no sound.. zero notta... so I've learned quite a bit this past week. Which, I actually enjoyed. Just would like confirmation this will in fact work. The dude, Agent Henry, at Geek Squad knew nothing I was speaking of. He'd never heard of the external device. I explained what it would do..which was basically switch the HDMI ports to the opposite of what they say. Or at least something like that correct. Thanks for reading me frustrating story ?Excited to see if I'm even close to getting this bad boy to push sound out this sound bar.