I've really had some trouble getting the icon to work. Would you please describe in detail what you did to fix it?
[Desktop Entry] Version=1.0.0 Encoding=UTF-8 Name=SqueezeControl Comment=Control your Squeezeboxes. Exec=/opt/squeezecontrol/squeezecontrol.py Icon=squeezecontrol X-Window-Icon=squeezecontrol Type=Application