In addition to being a 'local' music server attached to my office USB DAC and amp, the 2012 Mac Mini also serves as a Roon Core and "NAS" for streaming music to my Sonore microRendu network streamer in the basement, DIY Raspberry Pi streamer in the garage, and a couple AppleTV streamers in the bedrooms.  All controlled via the Roon App on my iPad touch screen remote. My music library consists of lossless CD rips, 'hi-res' downloads, and Tidal streaming.