Audio input from two PCs to one output

Hello, I wasn't sure if I was supposed to post this here or in the "Sound cards" section. But I had a question. What I want to do is take input from my laptop and my desktop PC audio and output it both to my headphones and my speakers at the same time. And I want to be able to control both my laptop and desktop PC audio separately on one device as well as the main volume control. What could I use to do this? Would something like this work?
https://tinyurl.com/gmbw4aoThank you in advance!

That looks like it will do the job. I'm not into audio though, but it does say it has two inputs and outputs which you need. What is your application?

Great thank you. I am just using it two get music/audio from my laptop into one source so I can wear one pair of headphones and all of the sound comes through there. Without loosing volume or getting any feedback.