itunes 4.1 is now available for windows 2000 and XP. Requires 128 MB RAM minimum. Requires quicktime 6.4. A 19.1meg download. Yes it is just winamp with aac encode decode, direct to cd burning.. and direct purchase and download of mp3s for people living in the states.. but I'm sure you've seen that sort of thing before.
Oh and panther will be out soon. With so many swooshy features, if it doesn't make you sea-sick, nothing will..
It might also be a 15% faster operating system. (at doing stuff like database queries), which is nice.