Use completely Free audio files

[alexemmons]

Update the program to use completely Free audio files, rather than MP3 and WAV (neither is completely Free - see wikipedia). This would require finding new audio files to replace the MP3 and WAV files, perhaps in AU or OGG. Here are the instances of PlaySound (1 file):

$ fgrep -i playsound _java */_java

Senet.java: standard.PlaySound("data\sound\Touching Moments.mp3");

Senet.java: standard.PlaySound("data\sound\Alchemists Tower.mp3");

Senet.java: public void PlaySound(String s)

Senet.java: standard.PlaySound("data\sound\throwSound.wav");

Senet.java: standard.PlaySound("data\sound\illegalTurn.wav");

Senet.java: standard.PlaySound("data\sound\swapSound.wav");