Apache Java FTP client does not switch to binary transfer mode on some servers

I'm using org.apache.commons.net.ftp library to work with FTP servers. I use about 5 FTP servers and one of them doesn't work properly (for me). For uploading files I also use method ftpClient.setFileType(FTP.BINARY_FILE_TYPE), but on this server the size of the uploaded file is not the same as on my local HDD. It is usually MP3 files and when I try to play uploaded MP3 there is some buzz. I suspects that FTP server has wrong configuration, but the company which takes care of this server would be very unlikely to do some changes. One more very important note: when I use Total Commander or WinSCP to upload file, the uploaded file is correct with same size.

Here is my code:

public class FtpConnection {
    String FTP_SERVER;
    String FTP_USER;
    String FTP_PASSWORD;
    int FTP_PORT;
    FTPClient ftpClient;
    int attempts = 3;
    long FILE_SIZE;

    public FtpConnection() {
        FTP_SERVER = StradaAd.FTP_SERVER;
        FTP_USER = StradaAd.FTP_USER;
        FTP_PASSWORD = StradaAd.FTP_PASSWORD;
        FTP_PORT = StradaAd.FTP_PORT;

        ftpClient = new FTPClient();

        ftpClient.setCopyStreamListener(streamListener);

        ftpClient.setBufferSize(1024 * 1024 * 1024);
        ftpClient.setConnectTimeout(240000);
        ftpClient.setDataTimeout(240000);
        try {
            ftpClient.connect(FTP_SERVER, FTP_PORT);
            ftpClient.setControlKeepAliveTimeout(300);
            ftpClient.enterLocalPassiveMode();
            ftpClient.setFileType(FTP.BINARY_FILE_TYPE);

            int replyCode = ftpClient.getReplyCode();
            if (!FTPReply.isPositiveCompletion(replyCode)) {
                StradaAd.errorArea.append("Operation failed. Server reply code: " + replyCode);
                return;
            }
            boolean success = ftpClient.login(FTP_USER, FTP_PASSWORD);

            if (!success) {
                //unsuccess
            }
        } catch (IOException ex) {
          //error
        }
    }

    public boolean uploadFile(File source, String destination, String chain) {
        try {
            FILE_SIZE = source.length();

            ftpClient.cwd("//" + chain + "/REKLAMY/");

            for(int i=0;i<attempts;i++) {
                ftpClient.storeFile(destination, new FileInputStream(source));

                for(FTPFile f : ftpClient.listFiles()) {
                    if(f.getName().equals(destination) && f.getSize() == source.length())
                        return true;
                }
            }
            return false;
        } catch (IOException ex) {
            Logger.getLogger(FtpConnection.class.getName()).log(Level.SEVERE, null, ex);
            return false;
        }
    }    
}

Do someone know the solution how to change this code or set this FTP server to have the same size uploaded file? Thanks in advance for any help.

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