Yup, we tell people they’re adults at 18, but the reality is that you do a lot of growing and maturing in your 20’s. I likely wouldn’t want to date any of my high school girlfriends if we met up again today, simply because we’re radically different people than we were in high school. And the same goes for college years as well; I likely wouldn’t want to date any of the people I dated in my early 20’s.
If you already have a NAS, (since SMB was mentioned, I’m assuming there’s some sort of NAS setup going) then you may even be able to host Plex directly on the NAS. It likely won’t be powerful enough for things like video transcoding, but just audio should be fine.