The use of Twilio for providing simple static audio messages to callers is a straightforward process that requires only a little space on a web host and the provided XML code. This can be used for various applications such as business hours announcements, daily work site instructions, or even a "Dial-a-song" service. By copying the XML code to a web server and adding it to an incoming phone number configuration page, users can receive audio messages from callers. The process of changing the message is also simple and only requires editing the text within the tags. This concept has great potential when combined with a database and various programming languages.