How can we take Osmc 5.1 audio output , what all hardwares needed? Pls help this topic
You might want to be a little more clear and specific with your question.
You can use HDMI to get 5.1 to a compatible amp or TV.
If you need optical (SPDIF), there are plenty of options available.
How can I take optical audio output from raspberry pi .actually what are the hardwares needed
The popular solution is https://www.hifiberry.com/
And a little bit of searching of this forum or a google search would have found that for you 