Считать Tag из mp3 в wstring

failIn.seekg(sizeof(failIn) - 128) // т.к. тег - 128 байт
int pos = file.tellg();

failIn >> str

wifstream failIn(L"D:\\w\\...", ios::ate); 
    if (failIn.is_open())
        cout << "Open" << endl;
    int k = failIn.tellg();
    failIn.seekg(k - 128);
    wstring str;
    getline(failIn, str);
       wcout << str << endl;
/*Тут можно использовать и всё без w*/

//MP3tag.h
 
#ifndef __MP3tag_h
#define __MP3tag_h
 
struct TAGdata
{
    char tag[3];
    char title[30];
    char artist[30];
    char album[30];
    char year[4];
    char comment[30];
    int genre;
};
 
#endif

//mp3reader.cpp
//snags the tag off the last 128 bytes of an MP3 file.
 
#include "MP3tag.h"
#include <iostream>
#include <fstream>
#include <string>
 
using namespace std;
 
int main()
{
    TAGdata tagStruct;
    char  fileName[fileNameLength+1];
    ifstream mp3File;
    char buffer[mp3TagSize+1];
 
    cout << "MP3 File Name? ";
    cin.getline(fileName,fileNameLength);
 
    mp3File.open(fileName);
    buffer[mp3TagSize] = '\0';  //just a precaution
 
    if (mp3File){
        cout << "Successful open of " << fileName << endl;
    }else{
        cerr << "***Aborting*** Could not open " << fileName << endl;
        return 1;
    }
 
    //move file pointer to 128 bytes off the end of the file.
    mp3File.seekg(-(mp3TagSize),ios::end);
    if(mp3File.fail()){
        cerr << "Could not seek, Aborting " << endl;
        return 1;
    }
 
    //get the data
    mp3File.read(reinterpret_cast <char *>(&tagStruct),mp3TagSize);
    if(mp3File.fail()){
        cerr << "Could not read after seeking, Aborting " << endl;
        return 1;
    }
 
        mp3File.close();
    return 0;
}