Strstr: Возвратить всю строку

if(strstr(line, s4) != NULL)
    {
    MediaPlayer1->FileName = line;
    MediaPlayer1->Open();
    MediaPlayer1->Play();
           }

Label2->Caption = ListBox1->Items->Strings[ListBox1->ItemIndex];

AnsiString s3=ListBox1->Items->Strings[ListBox1->ItemIndex];
        char *s4=new char [s3.Length()+1];
        strcpy(s4, s3.c_str());
        while(f.getline(line, sizeof(line)))
        {
        if(strstr(line, s4) != NULL)
        {
          SoundPath = s4;
          MediaPlayer1->FileName = SoundPath;

while(f.getline(line, sizeof(line)))
{
   if(strstr(line,ListBox1->Items->Strings[ListBox1->ItemIndex].с_str()))
   // ||
   if(AnsiString(line).Pos(ListBox1->Items->Strings[ListBox1->ItemIndex]))
   {
      MediaPlayer1->FileName=ListBox1->Items->Strings[ListBox1->ItemIndex];

Label2->Caption = ListBox1->Items->Strings[ListBox1->ItemIndex];

//---------------------------------------------------------------------------
 
#include <vcl.h>
#pragma hdrstop
 
#include "main.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
 
TMainForm *MainForm;
//---------------------------------------------------------------------------
 
__fastcall TMainForm::TMainForm(TComponent* Owner):TForm(Owner)
{
   //MediaPlayer1->DeviceType=dtAutoSelect;
   //MediaPlayer1->AutoOpen=true;
}
//---------------------------------------------------------------------------
 
void __fastcall TMainForm::ListBox1Click(TObject *Sender)
{
   if(ListBox1->ItemIndex>=0)
   {
      MediaPlayer1->FileName=ListBox1->Items->Strings[ListBox1->ItemIndex];
      MediaPlayer1->Open();
      try
      {
         MediaPlayer1->Play();
      }
      catch(EMCIDeviceError &eException)
      {
         ShowMessage(eException.Message);
      }
   }
}
//---------------------------------------------------------------------------

TStringList * List = new TStringList;
        List->LoadFromFile("Test.txt");
 
        for(int i=0;i<List->Count;i++)
        {
            AnsiString CurrentSelectedText=ListBox1->Items->Strings[ListBox1->ItemIndex];
                if(List->Strings[i].Pos(CurrentSelectedText))
                {
                    ShowMessage(List->Strings[i]);
                }
        }
 
        delete List;

 TStringList * List = new TStringList;
        List->LoadFromFile("PlayList.txt");
 
        for(int i=0;i<List->Count;i++)
        {
                AnsiString CurrentSelectedText=ListBox1->Items->Strings[ListBox1->ItemIndex];
                if(List->Strings[i].Pos(CurrentSelectedText))
                {
                        SoundPath=List->Strings[i];
                        MediaPlayer1->FileName = SoundPath;
        MediaPlayer1->Open();
        MediaPlayer1->Play();
        Label2->Caption = ListBox1->Items->Strings[ListBox1->ItemIndex];
    TrackInfo();
    ProgressBar1->Max = MediaPlayer1->TrackLength[1]/1000;
    ProgressBar1->Position = 0;
    timermin=0; timermin1=0;
    timersec=0; timersec1=0;
    Timer1->Enabled = true;
    SpeedButton8->Hint = "Приостановить";
    SpeedButton8->Tag = 1;
                }
        }

        TStringList * List = new TStringList;
        List->LoadFromFile("Test.txt");
 
        for(int i=0;i<List->Count;i++)
        {
            AnsiString CurrentSelectedText=ListBox1->Items->Strings[ListBox1->ItemIndex];
                if(List->Strings[i].UpperCase().Pos(CurrentSelectedText.UpperCase()))
                {
                    MediaPlayer1->FileName = List->Strings[i].UpperCase();
                    MediaPlayer1->Open();
                    MediaPlayer1->Play();
                }
        }
 
        delete List;