将.wav文件转换为二进制文件，然后再返回到.wav？

File file = new File(\"music.wav\");
byte[] data = new byte[file.length()];
FileInputStream in = new FileInputStream(file);
in.read(data);
in.close();

//encrypt data

FileOutputStream out = new FileOutputStream(file);
out.write(data);
out.close();