another quick quesiton, does this soundbar model has direct input switching or u press a button and it cycle through inputs? this is an important question…
On the remote it only cycles through, but in the SmartThings app it has discrete selections and that is what I am hoping for. Will this give me that?
so that is the issue… this is why its not working for you. if you do my smartthings implementation it will still not work for you because currently unfolded circle doesnt support cycle type implementation. look here: [Feature Request] Add CYCLE_INPUT support for media_player entity · Issue #72 · unfoldedcircle/core-api · GitHub
Yep - I got it to work but unlike the SmartThinbgs App, there aren’t any choices for HDMI 1, HDMI 2 etc and as you say there also is no “source” button that will cycle through. I just have to believe that there has to be a way to get the code from the Smartthings app into the R3?
there is, if i had the soundbar i would find it, its a bit complex to try to explain in this forum how to sniff your network to caputre the API call, then send it to me so i can implement it 
if it was simple, i would guide you. need someone that have the soundbar, some network knowledge and be comfortable with network sniffing etc. otherwise, its hard to explain. all we need is the ST app api call made to the soundbar and we can incorporate it in the integration.
that being said, try to follow my smartthings implementation, the way my integration work is it read the capabilities from the ST hub/app so maybe it will work. but you need to create the smartapp etc and finish my integration.
I was able to complete your Samsung integration but unfortunately it didn’t have anything for sources. Gemini has been helping me with trying to use the SmartThings sources but it hasn’t worked yet. I did the CLI and that’s complete and I’ve been trying codes via my command prompt but nothing has worked yet.
yeah, so sadly thats what i thought. smartthings app does not have API for direct input swithcing to soundbar… it work within their app but they dont expose an api to use, thats where the feature link i sent you is needed to be implemented by the unfolded team to make this work. sorry man. wish i had a better answer for you.
Funny - that’s almost exactly what Gemini said hah!
BTW - off topic but I’m getting strange behavior with my dock not learning IR commands. Both of my docks are saying “This device does not support IR learning”. I’ve learned many codes before so I have no idea what happened. Do you have any thoughts?