There are a few applications available for listening internet radio stations in Ubuntu Desktop. Gradio is new one that allows users to find radio stations by typing a keyword in the search box, and then listen to one internet radio by clicking on it.

The simple tool requires GTK3 >= 3.18, so it works on Ubuntu 16.04, Ubuntu 16.10, and their derivatives, e.g., Linux Mint 18 and Elementary OS 0.4 Loki.

How to install Gradio in Ubuntu 16.04:

The pre-compiled binary packages are available for download at the link below:

Download Gradio (.deb)

Choose amd64.deb for 64-bit system and i386.deb for 32-bit system, and then click install the package via Ubuntu Software.

For those who want to add the PPA and receive future updates via Software Updater, open terminal (Ctrl+Alt+T) and run commands to add the PPA repository (so far supports for Ubuntu 16.04 and 16.10):

sudo add-apt-repository ppa:haecker-felix/gradio-daily

sudo apt update

sudo apt install gradio

(Optional) To remove the software, simply run apt command with remove flag:

sudo apt remove gradio

And the PPA can be remove by launching Software & Updates utility and navigating to Other Software tab.