Excellent, it worked straight away with Winamp To be honest I loathe WMP and had already made a mental note to install Winamp at some stage anyhow.

While I didn't re-install WMP, I did remove Winamp's associations thereby allowing WMP to become the default streaming app again and it was the same as before.

It now also works with your web interface so for my part, the problem is fixed and I'm VERY HAPPY with the outcome, thanks for all your help

In the wider scheme of things I'd be happy to help diagnose this further but I think I was the only person who experienced it so there's no need I guess.