My attemps to install this in Ubuntu 18.04 LTS took my good couple of hours. But I did it at the end.
First I have tried Roon on Wine with Ubuntu’s Wine 3.x. Installation went OK but Roon failed during startup with weird errors I was not able to resolve.
Then I tried the steps here. With similar results.
Then I cleaned everything related to wine* and winetricks* and installed 5.x from winehq. Of course it needed too the damn faudio package from opensuse.org.
With the new Wine 5.x the Roon-on-Wine script installed everything (directory has 2,5GB) and it took him more than 10 minutes. After that Roon 1.7 64-bit started to work.