@spockfish THX for the install script, works wonderwell on Manjaro (ArchLinux) with KDE.
Only had one problem: very small characters and images, due to lack of scaling for my hi-resolution screen.
However, I was able to fix this by modifying the Roon startup script start_my_roon_instance.sh and passing roon.exe a scale argument as suggested in this post https://community.roonlabs.com/t/windows-requires-full-screen-setting-a-custom-scale-factor/35450:
#!/bin/bash
PREFIX=/home/woody/my_roon_instance
env WINEPREFIX=/home/woody/my_roon_instance wine /home/woody/my_roon_instance/‘drive_c/users/woody/Local Settings/Application Data/Roon/Application/Roon.exe’ -scalefactor=2