Hmmm...several ways to do it. You could record the sound with the sound
recorder found in 'accessories'. I use Total Recorder for recording sound
and saving it to various formats including 'wav'.....you can find it at
www.highcriteria.com and it costs $11.95. Another program thats good to use
is called 'Mp3 Wav Editor'; its a
useful program but it costs $29.95. You can 'google' the words to find it.
I use it mostly to 'combine' songs into a file....sorta like making an
album/playlist but in one
file. I don't know about other movie editing programs, but 'Camtasia'
allows you to
just save the sound track as a wav file. You just edit the movie down to
the sound you want, and save it. Maybe some of the other editors do that
too, but I don't know.
I just checked my AVS Converter and it too has a way to save just the audio
from a video clip....you click on 'edit' and then 'export audio' after you
have imported the video clip. It also lets you save in various formats.
So, there are a lot of ways to accomplish your task.