Create octave spectrum from .wav file

I need a simple program in VB.NET what will play .wav files in octave spectrum. I don`t need to play sound. Input = .Wav file (example included in files) Output = Values of Octave spectrum 1/n like (example included in files) 1st band 16Hz = -60 dB, 2nd band 100Hz = -50 dB, 3rd etc..... It is enough to show output in basic GUI in labels. 1/n = 1/1 Octave, 1/3 Octave, 1/6 Octave spectrum, etc. You can use 3rd party library. I need a source code in VB.NET