Radio Tray is an online radio station app which runs on Linux. Its goal is to have the minimum interface as possible with good features. It is not a player but just a interface to hear online radio stations. It plays most of the audio formats, supports playlist, favorites and bookmarks with sorting.
It is well integrated with the system tray. Radio Tray hits 0.6.3 today to fix the automatic shutdown option along with many bug fix.
To install Radio Tray in Ubuntu, download from here here
Once you find the url of the radio, go to Radio Config and click Add and enter the name and url of the radio.