Ah replies at last... Thanks. Whilst probably very sensible, that's not very helpful!!! Well I'd kind of figured that already which was I why I asked for help!! It's the 'something' that's the problem as I have absolutely no idea what it could be. (Ok, I confess. I'm pretty much illiterate when it comes to computers...). What I'd be really grateful for is ideas on what I can actually check for... And while I'm here, when I imported my library into v4.3, SS helpfully moved all my multi-artist compilations into individual albums with a single track in each!! How annoying is that??!!! Not a question, just a moan.... Are Sony Europe any good at answering techie questions like this or will my email just disappear into a great big hole?