*** Please type your report below this line ***
1. Create a wav file with sox:
$ sox source.wav -b 32 -e floating-point output.wav vol 0.5 dither
2. Encode with --quiet option:
$ oggenc --quiet output.wav
Skipping chunk of type "fact", length 4
$
This is just a minor annoyance (I don't particularly want to redirect
stderr) and seems to be related to 32-bit floating-point WAVs created
with SoX, which seems to tag them with some metadata.
The code in question should either honour the --quiet switch, or
recognise the "fact" chunk (which seems to be a standard chunk in WAVs)
and not print a warning on encountering it.