OK, after a weird phase, it seems that the download link is fixed, the RSS feed for the new tracks is fixed, and it plays nicely with iTunes. Unless I’m dreaming it, which probably explains why whenever I run I find I can’t move my feet.
I hadn’t realised they weren’t working until someone mentioned it in passing. And whenever I fixed one thing another went haywire, a bit like trying to level out the legs on a table by sawing bits off.
So, even if they haven’t worked for you before, what the hell. Give it a try.