Fault can be seen at http://www.tamba2.org.uk/T2/
In the menu column, the 3 categories at the bottom are formatted differently to the way I want them, which is how the rest of the menu looks.
I don't think it's the Winamp listing causing the problem.
I do think it's because having made a lot of changes to the page, I ran it through the validator and found I had created numerous errors. I've corrected them all, the page validates, but I must have closed a tag prematurely. Problem is, I just cannot see which tag, or where.
Not a huge problem, and it's all my fault, but if anyone fancies glancing at the source, I'd be very grateful !