Music Server now bane of my existence

After years of waiting and rendering the landscape of servers as too complex, confusing and basically useless for my purposes, I've delved into the world of a Mojo Audio music server. The Biggest Dog they sell. Now, I've determined I'm technically in over my head and run out of invectives.

I need a "Music Server for Dummies" lexicon and flow chart. Yes, I will contact them this week also.

To my surprise, there is no drive with the new Mini Mac. So I need that. And how will I burn discs for friends? And do I just use the USB out from the server to my USB DAC for optimal playback? Which USB? Or should it be a USB conversion to coaxial? I researched and purchased a 3TB Western Digital hard drive for dedicated backup. Will that suffice for this?

I purchased the Apple wireless keyboard and outboard trac-pad to navigate.

I'm at a crossroads as to continue with predictable brain damage assembling all of the parts or return this and wait again for this industry to collectively simplify the process. I've gone with the MAC so I can easily interface with my iPod pieces. Thank you to all for insight into this gnarly subject.