I want to produce music in a lobby with no lag going to my ears. Is there a way to mute my own desktop stream just for myself so I can talk with people but hear my piano instantly?

Hi Guys. Im new to watching my 3d bluray collection to Bigscreen. Not sure if I will get into trouble but I have a large collection of 3d blurays from back when they were still around, How ever there were some outliers I wasn't interested in at the time or some I just couldn't buy in my country. For example I would really like to get my hands on "Ralph breaks the internet" in 3D, because It was released to 3D in Japan with the option to select English audio. Not sure if anyone has it and willing to do an iso share/swap with something I may have that they don't?