hey guys i use kali linux 2.0 i386 i install kali 2.0 on hard disk and everythings is ok just one thing i install radiotray by synaptic without any errors my problem is

when i press radiotray icon to start nothing happen no launch and when i try to run by terminal i got this

/usr/lib/python2.7/dist-packages/radiotray/AudioPlayerGStreamer.py:51: FutureWarning: The behavior of this method will change in future versions. Use specific 'len(elem)' or 'elem is not None' test instead.
if(cfg_provider._settingExists("buffer_size")):
Sleep Timer, Stops playing after a predefined time, SleepTimerPlugin.py, Carlos Ribeiro
HelloWorld, This is a test plugin, HelloWorld.py, Carlos Ribeiro
started
Notifications, Shows message notifications on the desktop, NotificationPlugin.py, Carlos Ribeiro
Mate Media Keys, Controls Radio Tray through keyboard multimedia keys, MateMediaKeysPlugin.py, Ken
Gnome Media Keys, Controls Radio Tray through keyboard multimedia keys, GnomeMediaKeysPlugin.py, Carlos Ribeiro
History, Shows song history, HistoryPlugin.py, Carlos Ribeiro

I don't know what dose meaning i try four times uninstall & reinstall radiotray nothing change same result

Thanks alot in advance