BUTT is an excellent audio broadcasting software that is available for Windows, Linux and Macs. Download and install it from here: https://danielnoethen.de/butt/

It is extremely easy to configure BUTT so that you can broadcast audio using it into any Geminar.

When you start BUTT, click on Settings on the main screen. That will show you the “butt settings” dialog. From there, select the Main tab (It's the first one) From that TAB, select “Server Settings” and add a new “Server”

That will open up another dialog. I had already made the server, so now I am editing it for you. In your case, when adding a server the same dialog would be presented without any entries in the fields. Please do the following in that dialog:

1. Give any name you want. Ideally, give the same name as that of the Geminar
2. Under Type select “icecast” – We do not use Shoutcast or WebRTC
3. Give the address as radio.geminars.com and its port as 8199
4. Give the password that is specifically assigned for broadcasting. This can be seen when you edit your profile at Geminars. This password is NOT the same as that of your account at Geminars
5. The Icecast mountpoint should be the same one that is shown in the Author's dashboard for that specific Geminar
6. The Icecast user should be the same as your own username for your account at Geminars

Do not give any other information. Now you can save the configuration.