I am using the class below to play WAV files in a game client:

package sign;
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.FloatControl;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.SourceDataLine;
import javax.sound.sampled.UnsupportedAudioFileException;
 
public class AePlayWave extends Thread{
 
	private String filename;
 
	private Position curPosition;
 
	private final int EXTERNAL_BUFFER_SIZE = 524288; // 128Kb
 
	enum Position {
		LEFT, RIGHT, NORMAL
	};
 
	public AePlayWave(String wavfile) {
		filename = wavfile;
		curPosition = Position.NORMAL;
	}
 
	public AePlayWave(String wavfile, Position p) {
		filename = wavfile;
		curPosition = p;
	}
 
	public void run() {
 
		File soundFile = new File(filename);
		if (!soundFile.exists()) {
			System.err.println("Wave file not found: " + filename);
			return;
		}
 
		AudioInputStream audioInputStream = null;
		try {
			audioInputStream = AudioSystem.getAudioInputStream(soundFile);
		} catch (UnsupportedAudioFileException e1) {
			e1.printStackTrace();
			return;
		} catch (IOException e1) {
			e1.printStackTrace();
			return;
		}
 
		AudioFormat format = audioInputStream.getFormat();
		SourceDataLine auline = null;
		DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
 
		try {
			auline = (SourceDataLine) AudioSystem.getLine(info);
			auline.open(format);
		} catch (LineUnavailableException e) {
			e.printStackTrace();
			return;
		} catch (Exception e) {
			e.printStackTrace();
			return;
		}
 
		if (auline.isControlSupported(FloatControl.Type.PAN)) {
			FloatControl pan = (FloatControl) auline
					.getControl(FloatControl.Type.PAN);
			if (curPosition == Position.RIGHT)
				pan.setValue(1.0f);
			else if (curPosition == Position.LEFT)
				pan.setValue(-1.0f);
		} 
 
		auline.start();
		int nBytesRead = 0;
		byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
 
		try {
			while (nBytesRead != -1) {
				nBytesRead = audioInputStream.read(abData, 0, abData.length);
				if (nBytesRead >= 0)
					auline.write(abData, 0, nBytesRead);
			}
		} catch (IOException e) {
			e.printStackTrace();
			return;
		} finally {
			auline.drain();
			auline.close();
		}
 
	}
}

Along with

new AePlayWave(filePath).start();

To start playing.

However, randomly when sounds are playing the client Unexpectedly Quits (Terminal prints Invalid Memory Access, and Segmentation Fault), and I am running it from Terminal (Mac OS X 10.5.2, java version "1.5.0_13"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_13-b05-237)
Java HotSpot(TM) Client VM (build 1.5.0_13-119, mixed mode, sharing))

Here is a link to a small MP4 video of the error: http://www.allgofree.org/rs/sound_crash.mp4
Any ideas why this happens and how to fix it?

Edited by: ry60003333 on May 3, 2008 11:13 AM