相信很多人都遇到amr格式的音频文件不能直接在网页播放的问题，有人使用QuickTime插件的辅助，以下介绍如何使用jave.jar包将amr格式的音频文件转成mp3格式，官方下载地址http://www.sauronsoftware.it/projects/jave/download.php，闲话少说，直接上例子

Java代码  

1. package com.nnbrightstar.lbtm.common.utils;  
2.   
3. import it.sauronsoftware.jave.AudioAttributes;  
4. import it.sauronsoftware.jave.Encoder;  
5. import it.sauronsoftware.jave.EncoderException;  
6. import it.sauronsoftware.jave.EncodingAttributes;  
7. import it.sauronsoftware.jave.InputFormatException;  
8. import java.io.File;  
9.   
10. public class ChangeAudioFormat {  
11.     public static void main(String[] args) throws Exception {  
12.         String path1 = "E:\\Eclipse_Web\\lbtm\\webapp\\uploadFiles\\1395047224460.amr";  
13.         String path2 = "E:\\Eclipse_Web\\lbtm\\webapp\\uploadFiles\\1395047224460.mp3";  
14.         changeToMp3(path1, path2);  
15.     }  
16.   
17.     public static void changeToMp3(String sourcePath, String targetPath) {  
18.         File source = new File(sourcePath);  
19.         File target = new File(targetPath);  
20.         AudioAttributes audio = new AudioAttributes();  
21.         Encoder encoder = new Encoder();  
22.   
23.         audio.setCodec("libmp3lame");  
24.         EncodingAttributes attrs = new EncodingAttributes();  
25.         attrs.setFormat("mp3");  
26.         attrs.setAudioAttributes(audio);  
27.   
28.         try {  
29.             encoder.encode(source, target, attrs);  
30.         } catch (IllegalArgumentException e) {  
31.             e.printStackTrace();  
32.         } catch (InputFormatException e) {  
33.             e.printStackTrace();  
34.         } catch (EncoderException e) {  
35.             e.printStackTrace();  
36.         }  
37.     }  
38. }  

package com.nnbrightstar.lbtm.common.utils;

import it.sauronsoftware.jave.AudioAttributes;
import it.sauronsoftware.jave.Encoder;
import it.sauronsoftware.jave.EncoderException;
import it.sauronsoftware.jave.EncodingAttributes;
import it.sauronsoftware.jave.InputFormatException;
import java.io.File;

public class ChangeAudioFormat {
	public static void main(String[] args) throws Exception {
		String path1 = "E:\\Eclipse_Web\\lbtm\\webapp\\uploadFiles\\1395047224460.amr";
		String path2 = "E:\\Eclipse_Web\\lbtm\\webapp\\uploadFiles\\1395047224460.mp3";
		changeToMp3(path1, path2);
	}

	public static void changeToMp3(String sourcePath, String targetPath) {
		File source = new File(sourcePath);
		File target = new File(targetPath);
		AudioAttributes audio = new AudioAttributes();
		Encoder encoder = new Encoder();

		audio.setCodec("libmp3lame");
		EncodingAttributes attrs = new EncodingAttributes();
		attrs.setFormat("mp3");
		attrs.setAudioAttributes(audio);

		try {
			encoder.encode(source, target, attrs);
		} catch (IllegalArgumentException e) {
			e.printStackTrace();
		} catch (InputFormatException e) {
			e.printStackTrace();
		} catch (EncoderException e) {
			e.printStackTrace();
		}
	}
}