id3lib extract tags

I try to use ID3lib from C++. I tested near 50 mp3 files and most often I get answer that files haven't any tags. But actually, they are there ( I check it using another software and it shows them properly)

Actually, I've done nothing, I'd only linked library and copied example from offficial documentation

 void next_try()
 {
  ID3_Tag tag;
  tag.Link("file.mp3");
  cout<<"success\n";
  cout<<tag.GetFileSize()<<"\n";

   ID3_Frame *frame;
    if ( frame = tag.Find ( ID3FID_TITLE ) )
      {
       char title[ 1024 ];
       frame->Field ( ID3FN_TEXT ).Get ( title, 1024 );
       cout << "Title: " << title << endl;
      }
    else
     cout<<"not found\n";
 }

And a file that does have tags http://zalil.ru/33733757

But I get answer that it hasn't tag. But it has!!! And it's not a single occurrence. I wonder whether this library really works.

Perhaps someone had experience with this library. Moreover I am confused, because there are links on the official page to the working projects, so it has been proven that library can work properly.
Thanks in advance for any tips.

id3lib is no longer maintained and quite outdated as it does have no support for ID3v2.4.

You can easily see that with hexdump -C -n4 your.mp3:

00000000 49 44 33 03 |ID3.| 00000004

If the mp3 file starts with ID3 and the 4th byte is a 03, it will work with id3lib. If there's a 04 it's using ID3v2.4.