You may mainly use Foobar2000 to play music from your personal music library, but it's also capable of streaming audio from Internet radio.

This is one of the advantages of using a PC based music server which is Internet connected.

Some stations broadcast but only allow access using a custom 'player' application.

But others broadcast using standard protocols and on published Internet addresses without requiring you to have a custom player app, and so can be accessed using Foobar2000.

See 'shoutcast' as one source for lists of Internet radio stations and their broadcasting addresses, which you can then add to your Foobar2000 setup. Or even easier, see 'xatworld radio search', based on shoutcast, which allows you to perform searches and find internet radio addresses.

To add an Internet radio streaming channel to a playlist, select the 'File>Add location' option in Foobar2000, then enter the radio station's Internet streaming address.

For example, in the above figure of the XatWorld radio search website, to add the Jazz and lounge station to Foobar2000, after tapping on its Get IP button, type the displayed address http://listen.shoutcast.com/jazzandloungestation into Foobar2000.

Since for an Internet radio streaming channel, there likely is no defined 'track length' (it's just streaming), if you start playback of one of those stations in Foobar2000 Copilot, the 'track position' slider control will not be visible on the 'Now Playing' screen.
 
In place of the 'track position' slider, you will see large digits displayed of elapsed seconds of play time as well the outline of a radio. Pressing the 'play/pause' button in Foobar2000 Copilot will start and stop streaming.