I have some WAV recordings that I would like to trim to remove extra
material
at the beginning/end. I am looking for a wav file editor that will let
me do
simple edits like this, without changing the remaining audio.

From cursory examination of the .WAV file format, I would have thought
this was simple to do. Yet the programs I have tried so far (Audacity,
Nero WAV editor) can't even manage the even simpler operations of
Opening and saving a .WAV file, without changing the contents.

i.e., If I open a .WAV file, do nothing to it, then save/export it with
a new name, then compare the result to my original (fc /b), there are
lots of changes reported (not just at the beginning of the file). (And
each subsequent save/export produces yet a different variant of the
file.)

Are there portions of a .WAV file given over to garbage? If so, it
would
make life easier if the tool would repeat the same garbage
consistently.
(e.g. so that file compare routines could recognize when files are
identical.)
Is there generational information embedded in wav files? If so, are
there
comparison programs that will extract this information, or at least
ignore it
and tell you when the audio portions of two wav files are identical?

Looking for something low cost or free. (Don't need lots of bells and
whistles, just something simple and fast to do some basic operations.)

Thank you
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