Folks, I am working on a project to guide blind students within the campus. For this, I have used WiFi Tags. Students carries the Tags and Tags scans the access points at some arbitrary locations. The present location information is fingerprinted on the building map. This map is either in the server or in the cloud database. Depending on the present location, the server has to respond to the student's mobile regarding his next step - in which direction student has to go. This message is audio message to the student. Can you pls help me out regarding how to send audio message from the Server to the Student's mobile? Server may be the laptop.