Lobster

There's a problem with your sounds that's causing it to crash: java.lang.IllegalArgumentException: Format of sound file not supported: Slurp.wav at greenfoot.Greenfoot.playSound(Greenfoot.java:141) at Crab.act(Crab.java:74) at greenfoot.core.Simulation.runOneLoop(Simulation.java:200) at greenfoot.core.Simulation.run(Simulation.java:129) Caused by: javax.sound.sampled.UnsupportedAudioFileException: could not get audio input stream from input URL at javax.sound.sampled.AudioSystem.getAudioInputStream(Unknown Source) at greenfoot.sound.SoundClip.open(SoundClip.java:70) at greenfoot.sound.SoundClip.play(SoundClip.java:127) at greenfoot.sound.SoundPlayer.play(SoundPlayer.java:144) at greenfoot.Greenfoot.playSound(Greenfoot.java:135) ... 3 more Try opening them in Audacity and then exporting to wav using the default settings, that should output it in a supported format.