I don't know how to extract audio from a streaming video. All I know is how to extract audio from a DVD video. There is program called "DVD Audio Ripper" (about US$30) that will do that for you.
However, to do the remastering (EQ, hiss-reducer, stereo expansion, etc), I use my studio equipment.
From there I can burn the .wav files to CD-R.
Just PM me if you want the audio CD.