Roon has it’s own API (#tinkering:roonapi) to build so called extensions for Roon. The Roon Web Controller – as an example – is such an extension that allows to control Roon with a web browser. It has transport controls and shows track information while playing.
Sadly, AFAIK no one has made an extension for your Nuvo Grand Concerto so far.
What exactly do you want to know? What doesn’t work?
PS: Windows Internet Explorer 11 under Windows 7 doesn’t work. If that’s your problem, please do your self a favor and install a recent browser on your system and stop using that dinosaur.