Radio Tray - Radio Tray is an online radio streaming player that runs on a Linux system tray.
Radiotray-NG - An Internet radio player for Linux.
GaGa - In Chromatica, no one thing is greater than another.
RadioDroid - Look up online radio streams at RadioBrowser and listen to them. RadioBrowser is a wiki like aproach to collect as much online radio stations as possible. Every one can help by not only adding new stations but also tagging existing ones.
NetRadio - NetRadio plays Internet radio streams and manages your favorite stations.
TuneIn Radio - With TuneIn Radio Mobile, your mobile device becomes the radio.