NSString *urlToDownload=downloadSongURL;
        NSString *str_BhajnUrl=[[NSUserDefaults standardUserDefaults]valueForKey:@"BaseUrl"];

        urlToDownload=[[NSString stringWithFormat:@"%@%@/%@/%@",str_BhajnUrl,catName,@"Hindi",bhajanNameWithExtension] stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

        NSString *md5 = [encodedUrl MD5Hash];
        NSURL  *url = [NSURL URLWithString:md5];
        NSURLRequest *request = [NSURLRequest requestWithURL:url];
//        NSURL  *url = [NSURL URLWithString:encodedUrl];
//        NSURLRequest *request = [NSURLRequest requestWithURL:url];


            operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
            NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
            NSString *documentsDirectory = [paths objectAtIndex:0];
            NSString *filePath  =[NSString stringWithFormat:@"%@/%@",documentsDirectory,bhajanNameWithExtension];

        operation.outputStream = [NSOutputStream outputStreamToFileAtPath:filePath append:YES];