16 Bit Audio Values

Hi everyone. I posted this in the Java Sound area a week ago
but never got any responses. Its a bit important so forgive the
double posting.
16 bit signed audio has short values (-32,768 to 32,767)
where im assuming 0 = silence (the zero crossing).
Doesnt this mean that the values are asymmetrical?
are -32,768 and 32767 then the same (but opposite) amplitude
where the negatives are scaled differently than the positives?
Said clearer, looking at it as values from (-1 to 1) then 0 to 1
is broken up in 1/32767-ths and 0 to -1 is broken up in 1/32768-ths.
Is there any reason they dont just make the -32768 value meaningless to maintain symmetry?

Haha, shouldnt they just not use the last value then
(when converting the data to audio)?
Im not saying to do anything differently with the
short type obviously
but rather in regard to audio.Why? What difference is it going to make to the sound quality? 1 bit is about -45 db. I bet any ulaw compression makes more difference!

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