
-b and -B flags are number of sample indexed (passed over)
THEY ARE sample number -b10S or -B10s refer to sample with
index of 10 (which is the 11th sample in the data stream--
remember, numbering starts with 0).
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to input a one sample ascii input file you must pad the end
of the of the file with an extra newline (a blank line)
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can create a sndheader with 0 samples with a empty files
of two or more lines

cat xxx | sndio -c2 -a new.snd
works

sndio -c2 -a xxx > new.snd
does not works
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remember that

blah blah blah | sndio file.snd

will overwrite file.snd if it exists
to insure that file.snd is completely replaced
with new samples (no leftovers) use

blah blah blah | sndio > file.snd