Java编码音乐播放器简化版

import java.io.File;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;

/**
 * @author hjl
 * @date 2008-8-1
 * @function 简化实现音乐播放功能
 * @version 1.0
 */
public class MusicPlay {

	public static void main(String[] args) {
		AudioInputStream m_audioInputStream = null;
		SourceDataLine m_line = null;
		AudioFormat audioFormat = null;
		try {
			File file = new File("D:\\music070924\\雨一直下.mp3");
			m_audioInputStream = AudioSystem.getAudioInputStream(file);
			audioFormat = m_audioInputStream.getFormat();
			
			if (audioFormat.getEncoding() != AudioFormat.Encoding.PCM_SIGNED) {
				AudioFormat newFormat = new AudioFormat(
						AudioFormat.Encoding.PCM_SIGNED, audioFormat
								.getSampleRate(), 16, audioFormat.getChannels(),
						audioFormat.getChannels() * 2, audioFormat.getSampleRate(),
						false);
				System.out.println("Converting audio format to " + newFormat);
				AudioInputStream newStream = AudioSystem.getAudioInputStream(
						newFormat, m_audioInputStream);
				audioFormat = newFormat;
				m_audioInputStream = newStream;
			}
			
			DataLine.Info info = new DataLine.Info(SourceDataLine.class,audioFormat);
			m_line = (SourceDataLine) AudioSystem.getLine(info);
			m_line.open(audioFormat, m_line.getBufferSize());
			m_line.start();
			
			int bufferSize = (int) audioFormat.getSampleRate() * audioFormat.getFrameSize();
			byte[] buffer = new byte[bufferSize];

			int bytesRead = 0;
			while (bytesRead >= 0) {
				bytesRead = m_audioInputStream.read(buffer, 0, buffer.length);
				if (bytesRead >= 0) {
					m_line.write(buffer, 0, bytesRead);
				}
			} 
			m_line.drain();
			m_line.close();
		
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}

 异常:
javax.sound.sampled.UnsupportedAudioFileException: could not get audio input stream from input file
 at javax.sound.sampled.AudioSystem.getAudioInputStream(AudioSystem.java:1170)
 at com.simpledev.music.sample.MusicPlay.main(MusicPlay.java:27)
缺少jl1.0.jar,tritonus_share.jar,mp3spi1.9.4.jar，见lib.rar