$ sudo apt-get update
$ sudo apt-get install rhythmbox-radio-browser 

rhythmbox-radio-browser is installed in your system.

Make ensure the rhythmbox-radio-browser package were installed using the commands given below,

$ sudo dpkg-query -l | grep rhythmbox-radio-browser *

You will get with rhythmbox-radio-browser package name, version, architecture and description in a table

rhythmbox-radio-browser package basic information: