Best Mods for a Mac-mini used as a Music Server

I have my Mac-mini on order...should be able to pick it up tomorrow, 2/27/19, at my local Apple Store.  So, I would love to hear member opinions & experiences on the panoply of modifications out there to improve the performance & sound quality of a Mac-mini based music server.

Not sure how much difference it makes, but the Mac-mini I will be using is a 2018 model.

Thanks in advance!


OldManDave