Hi @caked ,
You can buy replacement audio jack socket and you can replace it if you have the means to solder it off the board. If you do that, just make sure that you cover the surrounding area with Kapton tape to minimise the heat exposure to other components.
In some of the MSI laptops the audio and USB connections are on a separate board that connects to your motherboard. If you take off the bottom lid of your laptop you will be able to see if it is on the main board or on separate. You can get replacement audio/USB boards for about $25 or $30.