When I try to download Jamulus Microsoft Edge says "Jamulus-3.5.8-installer.exe was blocked because it could harm your device"; then, having bypassed that, Windows Defender says much the same. And it's not just me: everyone in the choir, with different browsers and different security software, has the same problem. Some of us are more cavalier than others but some are refusing to install it so this could be a show-stopper.