Roon software on mac mini

I use a mac mini 2018 as a music server. Mojave 10.14.5. Connected to Bang & Olufsen Beolab 5 active speakers. No DAC.
Will installing Room software bring any sound improvements or just a better way of organizing the music library ?
Will installing Roon bypass the mac mini software so I can play tracks from HD tracks with high bit rates ?

It will bring the improved organisation and Roon has its own engine for playback. Sound improvements are subjective though. You may like the results, you may not. But you have nothing to lose so give it a try.

Yes, 24 bit with automatic rate switching.

And 5.1 files if you have any.

How do you connect the Mac to the BL5 ?
How do you control the volume of the sound ?

The Mac mini and my B&O Tv are connected to the BL5 via a B&O hub that came with the speakers and TV. The volume is controlled by eiter the B&O remote control or the Apple remote app.