Hey @George_Burrows – there are a couple of questions I think we need to answer before moving forward here.
Do these other audio sources stream over your network, like Roon does? Most apps don’t stream audio in the same way Roon does, so other sources working isn’t always a helpful data point.
To move forward, we need to know whether you’ve confirmed whether the Roon issue is affected when you disable all firewalls?
Also, as Eric mentioned above, we need to know the full details of your setup. The details we need are listed here, and once we have them we can take a deeper look at this if disabling your firewall doesn’t help.
Thanks!