Unlike terrestrial radio, broadcasting online doesn't require a licence as long as there is no copyrighted music used within your show. However, if you're planning on running something other than talk radio, you're going to need a licence.

Do you need a license to broadcast music?

Unlike terrestrial radio, you don't need to own a license in order to broadcast your stream online. However, if your station is going to be playing commercial music, you will need to obtain a license in order to fully protect yourself and ensure you are not infringing on anyone else's copyright.

How do I start an Internet radio station legally?