java.lang.NullPointerException
        at com.sun.media.sound.StandardMidiFileReader.getSequence(StandardMidiFileReader.java:226)
        at javax.sound.midi.MidiSystem.getSequence(MidiSystem.java:819)
        at com.sun.media.sound.SoftMidiAudioFileReader.getAudioInputStream(SoftMidiAudioFileReader.java:174)
        at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1145)
        at de.timweb.ld48.evo.util.SoundEffect.<init>(SoundEffect.java:31)
        at de.timweb.ld48.evo.util.SoundEffect.<clinit>(SoundEffect.java:12)
        at de.timweb.ld48.evo.game.EvoCanvas.start(EvoCanvas.java:42)
        at de.timweb.ld48.evo.EvoMain.main(EvoMain.java:23)