Hello,
In this [1] file, one of more than 35000, recover files after an error 
with this program [2] gives me this error:
WARNING: Invalid header page, no packet found
[1].-> 
https://217.160.6.133/owncloud/public.php?service=files&t=dc0e88c8e3dfc87e29345bf4b39e239a
[2].-> http://www.cgsecurity.org/wiki/PhotoRec
I've tried:
1- mplayer
2. vlc
3. audacity
4. oggz
5. ogg
There is no way to recover.
However almost all mp3 files work correctly.
Any ideas please.
Note:
If you access the file, the server will give a security error because 
the certificate is not verified the same, but the site is secure, it's 
my server for personal use.
-- 
Bueno, nadie es perfecto.( Well, nobody's perfect.)
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GNU....