• // aNONradio //
  DJed by members of the SDF Public Access UNIX System.
• bauhaus.fm
• dublab
  (Found via this show: Happy Hour w/ Bianca Lexis)
• Radio Implicancies
• soma fm
• TildeRadio
  DJed by members from all over the tildeverse.

• Radiooooo
  Play a selection of songs from different countries from different eras.
• #pouetRadio
  Collects music posted to the Fediverse with the tags #tootRadio and #pouetRadio. Less a radio station really and just a list of Youtube embeds.

• COMmon RADio
  Stream and search for community radio stations from around the world 👌
  Can submit stations via tulsileathers/commonradio.
• Community Radio Browser
  Searchable, editable, database. Can play audio too.

Most audio players seem to support audio streams. Some examples:

• VLC
• Mplayer
• Foobar 2000

I'm personally on the look-out for a little piece of software that's dedicated to Internet radio, but I haven't found one yet.

• Internet radio