public AudioStream(InputStream in) throws IOException 
{
        super(in);
        stream = in;
        if( in.markSupported() == false ) {
            stream = new BufferedInputStream( in, 1024 );
        }
        try {
            ais = AudioSystem.getAudioInputStream( stream );
            format = ais.getFormat();
            this.in = ais;
        } catch (UnsupportedAudioFileException e ) {
            // not an audio file, see if it's midi...
            try {
                midiformat = MidiSystem.getMidiFileFormat( stream );
            } catch (InvalidMidiDataException e1) {
                throw new IOException("could not create audio stream from input stream");
            }
        }
}

 public AudioData getData() throws IOException 
{
        int length = getLength();
        //limit the memory to 1M, so too large au file won't load
        if (length <  1024*1024) {
            byte [] buffer = new byte[length];
            try {
                ais.read(buffer, 0, length);
            } catch (IOException ex) {
                throw new IOException("Could not create AudioData Object");
            }
            return new AudioData(format, buffer);
        }
        /*              acis.setData();
                        if (acis.stream instanceof ByteArrayInputStream) {
                        Format[] format = acis.getFormat();
                        byte[] bytes = acis.getBytes();
                        if (bytes == null)
                        throw new IOException("could not create AudioData object: no data received");
                        return new AudioData((AudioFormat)format[0], bytes);
                        }
        */
        throw new IOException("could not create AudioData object");
}

Get the data.

 public int getLength() 
{
        if( ais != null && format != null ) {
            return (int) (ais.getFrameLength() *
                          ais.getFormat().getFrameSize() );
        } else if ( midiformat != null ) {
            return (int) midiformat.getByteLength();
        } else {
            return -1;
        }
}