function Swf2Exe(S, D, F: string): string;
 //S = Source file (swf) 
 //D = Destionation file (exe) 
 //F = Flash Player 
var
 SourceStream, DestinyStream, LinkStream: TFileStream;
 flag: Cardinal;
 SwfFileSize: Integer;
 begin
 Result := 'something error';
 DestinyStream := TFileStream.Create(D, fmCreate);
 try
 LinkStream := TFileStream.Create(F, fmOpenRead or fmShareExclusive);
 try
 DestinyStream.CopyFrom(LinkStream, 0);
 finally
 LinkStream.Free;
 end;

 SourceStream := TFileStream.Create(S, fmOpenRead or fmShareExclusive);
 try
 DestinyStream.CopyFrom(SourceStream, 0);
 flag := $FA123456;
 DestinyStream.WriteBuffer(flag, SizeOf(Integer));
 SwfFileSize := SourceStream.Size;
 DestinyStream.WriteBuffer(SwfFileSize, SizeOf(Integer));
 Result := '';
 finally
 SourceStream.Free;
 end;
 finally
 DestinyStream.Free;
 end;
 end;

 procedure TForm1.Button1Click(Sender: TObject);
 begin
 Swf2Exe('c:\somefile.swf', 'c:\somefile.exe',
 'c:\Program Files\Macromedia\Flash MX\Players\SAFlashPlayer.exe');
 end;