Fuck you.
No, really. While I rather care for the idea of your BSD-based (Well, Mach kernel, BSD userland, NeXTish UI) OS and shiny machines that are more than a little reminiscent of a Sharp cassette deck I bought in 1984 when silver meant Future, I'm somewhat less impressed with the utter balls-up the latest Quicktime install has made of my Winders box. If I want your woolly-jumpered nanny-knows-best environment, I'll go use it native. It's not going to fly on a machine that's slowly becoming KDEish (only with all the useful corners filed off so I don't hurt myself. And only one screen. Where are the virtual desktops, eh?) as Cygwin takes over.
Arse!
(There's probably a sensible answer to prising Qt's fingers off the capability to play MP3s from Firefox, but I'm not seeing it just now. Normal service is for the weak.)