Intento reproducir un sonido .wav cada vez que el usuario presiona un botón, pero se produce una excepción:

Exception in thread "Thread-0" java.lang.IllegalArgumentException: Invalid format
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.createStream(PulseAudioDataLine.java:142)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:99)
    at org.classpath.icedtea.pulseaudio.PulseAudioDataLine.open(PulseAudioDataLine.java:283)
    at org.classpath.icedtea.pulseaudio.PulseAudioClip.open(PulseAudioClip.java:402)
    at org.classpath.icedtea.pulseaudio.PulseAudioClip.open(PulseAudioClip.java:453)
    at Uber.play(Uber.java:534)
    at Uber$5.run(Uber.java:340)
    at java.lang.Thread.run(Thread.java:724)

Aquí está el código:

//Play Audio File
public void play(String file) throws LineUnavailableException, UnsupportedAudioFileException, IOException
{
    AudioInputStream inputStream = AudioSystem.getAudioInputStream(new File(file));
    Clip clip = AudioSystem.getClip();
    clip.open(inputStream);
    clip.start();
}