I come from the PC world, so, I don’t know the capability of a Mac Mini.
Do you have a computer you use to record music? What about installing a freeware DAW and an audio interface (if it needs one)
I come from PC world also! I built my own PCs for many years. I finally decided to try mac and bought the mac mini,I was having to reinstall windows all the time, just crashing a lot with pro tools, so WIN 7 was my last dance with PC. Then moved to the imac 5k. I use the Imac to run pro tools. I decided to set the mini up as a little server