You can easily test the waters via websites on the PC such as the following examples which is just a small sample of available websites.
or simply enter internet radio online website on your favourite search engine.
Alternatively, you can download internet radio apps onto your smartphone from GooglePlay and IOS - best to monitor your mobile data usage, and, stream the internet radio broadcast to your hifi set via a stand-alone bluetooth box.
As one of the sites inform,
Over 30,000 Stations Worldwide. For free
Do explore and enjoy the various internet radio stations worldwide!