submission from dan shiffman:

If loadSound() is called more than 32 times (actual limit may vary),
this error message will result:

javax.sound.sampled.LineUnavailableException: No Free Voices
at com.sun.media.sound.MixerClip.nSetup(Native Method)

I've solved the problem by adding a destroy() method to PSound2, which
"flushes" and "closes" the clip.

/**
* destroy method, this is new, I have no idea if I'm doing this correctly
*/
public void destroy() {
try {
clip.flush();
clip.close();
} catch (Exception e) {
System.out.println("Error destroying clip: " + e);
}
}

I can now do this infinitely without any error:

void mousePressed() {
println("Loading 32 new sounds. . .");
for (int i = 0; i < sounds.length; i++) {
sounds[i].destroy();
sounds[i]= loadDSound("success.wav");
}
}

edit]
fix and example for testing

implemented using finalize() for 0099, but this probably won't be enough to
do it properly since finalize is called so inconsistently and who knows if
things are properly getting de-referenced.

Closing bug since sound has been removed from the core API.