a remarkably basic question about Roon

I'm considering trying out Roon and, despite hours spent on their too-busy website, I'm still not entirely sure what it would do for me. (Trying to get through their "support" section is an exercise in misery all around.) 

Here's my clueless question. I currently stream music through a Bryston BDP. I use the Bryston software, "Manic Moose," on my laptop or phone to create playlists, move between digital sources (flash drive, Qobuz, radio), and as a remote control for volume, song choice, etc. The Bryston software isn't at all elegant but it's functional.

So, if I get Roon, would I be doing the same thing from the Roon app on my laptop or phone? Would I be completely bypassing "Manic Moose"? and doing everything on the Roon app, including such things as volume and song selection? I understand that Roon is an effective organizer of music from multiple sources; is it also a "media player?? (I have a traditional two-channel set-up and don't do multiple rooms.) The Manic Moose software is clunky enough that I'd consider swapping it out for Roon, if that's in fact what I would be doing. 

Thanks!