Linux 101 stuff. Questions are encouraged, noobs are welcome!

How do I map my motherboard audio ports to all be 5.1 line-out? I’m trying to fully make the switch from Windows to Linux on my gaming desktop. I’ve messed around with it on my laptop for quite a while.

One of the main things holding me back is configuring the 3.5 audio ports on my motherboard. I have 5.1 surround speakers with 3 3.5mm jacks for center/sub, front and rear speakers. The jacks it uses by default are line-in, line-out and mic. In Widows it automatically detects and changes the ports to all be the correct line-in ports, formally I could use the realtek panel to map them manually. I can’t seem to find any option in Mint to do that.