you need a stream program installed on your computer.
We recommend winamp. You will need shoutcast DSP plugin for your winamp software to stream.
Download both winamp and DSP plugin from the following links and install them on your computer.
DSP plugin from http://www.shoutcast.com/broadcast-tools bottom of the page.
You will need to enter your radio IP and radio password + radio port on the DSP program, you can find the required information on your software
WHMSonic >> List-Manage My Radios page. Configure the encoder settings and start playing music with your winamp, click connect button on dsp plugin to stream.