RetroHexChat
Hex Radio is an internet radio player that opens on the chat's desktop. Choose from thousands of stations around the world: the most played, a genre from chiptune to jazz, or a station by its name. Star the ones you like, and keep listening while you chat in another window.
The display draws the music as a spectrum of bars or as an oscilloscope line. Open the ten-band equalizer to raise the bass or soften the treble, and put it back to flat with one click.