OK well after much trial and error and searching, i finally got a decent http mp3 streamer.
This is probably not worth doing if you dont have a certain amount of tech knowledge but here it is;
Firstly run a Apache http server off your home pc, you will need to put a folder in the Apache htdocs folder with a few mp3s in it just to get the thing working initially
Secondly get "XSPF Web Music Player" from http://musicplayer.sourceforge.net/
Follow the instructions on this page to install the program and edit the apache index.html as described. I had some issues creating a working .xspf playlist file but once resolved the player works 100% in the Wii browser, your Wii is now a Media Centre <3.
Ill post a proper step by step guide if people would like, this post is just to let people know it can be done and what to use to do it