How do you use Tidal with you local library?

I have a Bluesound Node 2 and I can choose between my ITunes library or Tidal to play music. I also have the Itunes music files on a Mycloud NAS.

Confused newbie here  I’ve been maintaining an analog system with no digital playback options, and a digital-only system that is my iTunes/Music library. To call the latter a system grossly overstates what it is, but it allows me to play all of my digital music where I am the most: my office, car, airplanes, and hotels.  I am now planning on merging the two as I’ve finally upgraded my analog system to include digital sources.

All of this is to say:

In my mind, what I’d like is to use my hard drive containing the 200+ gigs of music as the center of system. I recently bought the Primare NP5, and will use the drive as a source for that (drive to NP5 to DAC to pre-amp to amp, etc.). 
My question is will Roon software unite all of my streaming options while at the same time allow me to maintain my iTunes/Music library? Will I need that or will it be sufficient to just us AirPlay to stream my music via the NP5?

@ogeopaas Roon will only stream Tidal and Qobuz what are you using as an streaming source?