If this works, and you are able to install the skill on your Alexa device please then re-click the computer link, head down to the bottom of the page and leave a customer review so that more people will be able to see the app in the future.
FOR SONOS SPEAKERS
Go to your Sonos app, click on Manage/ Add Radio Station, and enter the following:
This will then appear in your "Radio Stations" list.
Please keep in mind that this is all very new to Ewan & Derek and troubleshooting may take a bit longer to get a reply than you expect. But, I'm sure you will all agree that this is a great time for RADIO GH as we move forward with technology.