Which live encoder software are you using? You should ensure that you are connecting on the mount point of /live and with some encoders you need to use the username of source instead of your server accounts username of 'vision'.
Your media player works for me on your webpage http://www.visionfm.ng/ in Chrome, the audio however is just distorted white noise. I tuned into your stream via your control panel and it is the same there. So the only issue I can see here currently is with the live source that you have connected to the server.