#190 Nullpointer exception (no sound system)

[Anonymous]

An exception occurs on a linux machine without a
working sound system:

Exception in thread "AWT-EventQueue-0"
java.lang.ExceptionInInitializerError
at
jfreerails.client.common.ModelRootImpl.<init>(ModelRootImpl.java:73)
at
jfreerails.launcher.GUIClient.<init>(GUIClient.java:75)
at
jfreerails.launcher.Launcher.startGame(Launcher.java:100)
at
jfreerails.launcher.Launcher.nextButtonActionPerformed(Launcher.java:636)
at
jfreerails.launcher.Launcher.access$100(Launcher.java:41)
at
jfreerails.launcher.Launcher$5.actionPerformed(Launcher.java:469)
at
javax.swing.AbstractButton.fireActionPerformed(Unknown
Source)
at
javax.swing.AbstractButton$Handler.actionPerformed(Unknown
Source)
at
javax.swing.DefaultButtonModel.fireActionPerformed(Unknown
Source)
at
javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at
javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown
Source)
at java.awt.Component.processMouseEvent(Unknown
Source)
at
javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown
Source)
at java.awt.Container.dispatchEventImpl(Unknown
Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at
java.awt.LightweightDispatcher.retargetMouseEvent(Unknown
Source)
at
java.awt.LightweightDispatcher.processMouseEvent(Unknown
Source)
at
java.awt.LightweightDispatcher.dispatchEvent(Unknown
Source)
at java.awt.Container.dispatchEventImpl(Unknown
Source)
at java.awt.Window.dispatchEventImpl(Unknown
Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown
Source)
at
java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown
Source)
at
java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown
Source)
at
java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at
java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.NullPointerException
at
jfreerails.client.common.SoundManager.<init>(SoundManager.java:93)
at
jfreerails.client.common.SoundManager.<clinit>(SoundManager.java:53)
... 30 more