Was able to get it working with the following
sudo systemctl start roonserver
sudo systemctl enable roonserver
sudo mkdir -p /etc/firewalld/services/
sudo nano /etc/firewalld/services/roonserver.xml
Add the following content to the roonserver.xml
file:
sudo firewall-cmd --reload
sudo firewall-cmd --zone=public --add-service=roonserver --permanent
sudo firewall-cmd --reload
I really liked I saw the TV glow. Huge Alex G fan though.