I use the follow code of the widget on my website,

<span class="cc_streaminfo" data-type="song" data-username="radioregenboog">Loading ...</span>

The follow code is from the body,

<script language="javascript" type="text/javascript" src="http://server-51.stream-server.nl/system/streaminfo.js"></script>

Brian Adams - Going Down

But i would like this
Artist: Brian Adams
Titel: Going Down

Can someone help me?

you will need to add the artist and song title to the code, I've not look at the info on that so you'll have to either find the code or tell me which file produces that info.