GetSoundFile

/* https://ws.esendex.us/notifyws/phonenotify.asmx?wsdl was added as a Web Reference and given the name WSDL */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GetSoundFile.WSDL;

namespace GetSoundFile
{
    class Program
    {
        static void Main(string[] args)
        {
            WSDL.PhoneNotify PN = new WSDL.PhoneNotify();
            WSDL.NotifyReturn NR = new WSDL.NotifyReturn();

            byte[] File = PN.GetSoundFile("testsoundfile_wav", "YOUR LICENSE KEY");
            string Sound = Convert.ToBase64String(File);

            Console.WriteLine(Sound);

            Console.ReadLine();
        }
    }
}

' https://ws.esendex.us/notifyws/phonenotify.asmx?wsdl was added as a Web Reference and given the name WSDL

Imports GetSoundFile.WSDL
Module Module1

    Sub Main()

        Dim PN As New WSDL.PhoneNotify
        Dim NR As New WSDL.NotifyReturn
        Dim File As Array
        Dim Sound As String

        File = PN.GetSoundFile("testsoundfile_wav", "YOUR LICENSE KEY")

        Sound = Convert.ToBase64String(File)

        Console.WriteLine(Sound)

        Console.ReadLine()

    End Sub

End Module

Dim request, oXMLHttp, url
url = "http://ws.esendex.us/NotifyWS/PhoneNotify.asmx"

request = "<?xml version='1.0' encoding='utf-8'?>" & _
"<soap:Envelope xmlns:xsi=""http://www.w3.org/2001/XMLSchema-instance"" xmlns:xsd=""http://www.w3.org/2001/XMLSchema"" xmlns:soap=""http://schemas.xmlsoap.org/soap/envelope/"">" & _
"<soap:Body>" & _
"<GetSoundFile xmlns=""http://ws.esendex.us/NotifyWS/"">" & _
"<SoundFileID>testsoundfile_wav</SoundFileID>" & _
"<LicenseKey>YOUR LICENSE KEY</LicenseKey>" & _
"</GetSoundFile>" & _
"</soap:Body>" & _
"</soap:Envelope>"

Set oXMLHttp = CreateObject("MSXML2.ServerXMLHTTP")
oXMLHttp.open "POST", url, False
oXMLHttp.setRequestHeader "Content-Type", "text/xml; charset=utf-8"
oXMLHttp.send request
response = oXMLHttp.responseText

MsgBox oXMLHTTP.responseText

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Properties;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

public final class GetSoundFile {
    public static void main(String[] args) {
        try {
            URL url = new URL("http://ws.esendex.us/NotifyWS/PhoneNotify.asmx/GetSoundFile?"
                            + "SoundFileID=test sound file"
                            + "&LicenseKey=f01d89fd-5155-5455-5585-e84ab8de8591");
            try {
                InputStream in = url.openStream();
                StreamSource source = new StreamSource(in);
                printResult(source);
            } catch (java.io.IOException e) {
                e.printStackTrace();
            }
        } catch (MalformedURLException e) {
            e.printStackTrace();
        }
    }

    private static void printResult(Source source) {
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            StreamResult sr = new StreamResult(bos);
            Transformer trans = TransformerFactory.newInstance().newTransformer();
            Properties oprops = new Properties();
            oprops.put(OutputKeys.OMIT_XML_DECLARATION, "yes");
            trans.setOutputProperties(oprops);
            trans.transform(source, sr);
            System.out.println("**** Response ******");
            System.out.println(bos.toString());

            bos.close();
            System.out.println();
        } catch (Exception e) {
        }
    }
}

GET /NotifyWS/PhoneNotify.asmx/GetSoundFile?SoundFileID=string&LicenseKey=string HTTP/1.1
Host: ws.esendex.us

POST /NotifyWS/PhoneNotify.asmx/GetSoundFile HTTP/1.1
Host: ws.esendex.us
Content-Type: application/x-www-form-urlencoded
Content-Length: length

SoundFileID=string&LicenseKey=string

HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<base64Binary xmlns="http://ws.esendex.us/NotifyWS/">base64Binary</base64Binary>

POST /NotifyWS/PhoneNotify.asmx HTTP/1.1
Host: ws.esendex.us
Content-Type: text/xml; charset=utf-8
Content-Length: length
SOAPAction: "http://ws.esendex.us/NotifyWS/GetSoundFile"

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetSoundFile xmlns="http://ws.esendex.us/NotifyWS/">
      <SoundFileID>string</SoundFileID>
      <LicenseKey>string</LicenseKey>
    </GetSoundFile>
  </soap:Body>
</soap:Envelope>

HTTP/1.1 200 OK
Content-Type: text/xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <GetSoundFileResponse xmlns="http://ws.esendex.us/NotifyWS/">
      <GetSoundFileResult>base64Binary</GetSoundFileResult>
    </GetSoundFileResponse>
  </soap:Body>
</soap:Envelope>

POST /NotifyWS/PhoneNotify.asmx HTTP/1.1
Host: ws.esendex.us
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <GetSoundFile xmlns="http://ws.esendex.us/NotifyWS/">
      <SoundFileID>string</SoundFileID>
      <LicenseKey>string</LicenseKey>
    </GetSoundFile>
  </soap12:Body>
</soap12:Envelope>

HTTP/1.1 200 OK
Content-Type: application/soap+xml; charset=utf-8
Content-Length: length

<?xml version="1.0" encoding="utf-8"?>
<soap12:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap12="http://www.w3.org/2003/05/soap-envelope">
  <soap12:Body>
    <GetSoundFileResponse xmlns="http://ws.esendex.us/NotifyWS/">
      <GetSoundFileResult>base64Binary</GetSoundFileResult>
    </GetSoundFileResponse>
  </soap12:Body>
</soap12:Envelope>