how to plot .wav file

Hi , dear expert
    my question is ....... I try to use java applicationt to plot .wav file , then, planing  do further analysis ,such as FFT and LPC, even complex DWT, for those calculation, I must get the data with double format.    i used streams (output, input ,audio,,,,,), unfortunately , it did not work  ,also I used java.nio.*, try to convert 8 byte to 1 double, but.....   I know the format of .wav file is a little bit complication, hopeful, one of you can help me, Thank you very much indeed..

                                                                   Roy from Australia, God bless you

                                                            Email: lma11@student.monash.edu.au
royoz2003Asked:
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objectsCommented:
post what u have so far
0
objectsCommented:
this example should helps get you started:
http://www.jsresources.org/examples/AudioDataBuffer.html
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