Dell recently launched a new line of desktops called the "One" series. But coming in at 25+ pounds, and only Vista options, will this really draw indecisive consumers to buy a Dell over a Mac?

I've been using iTunes for a few years now. While most of my friends don't bother with things like ratings and such I find those features extremely useful. I rate most of my music and I create dynamic playlists based off of things like play count and last played date and rating to create a relatively fresh rotation of music. I would really love to get out of iTunes entirely and use something slimmer, but I can't seem to find something that will offer what I need.

Here's what I want:

• The ability to port over all of my existing data such as play count, play history, ratings, etc.
• Dynamic playlist support. For instance, I want to be able to make a playlist that will only include tracks rated above a certain threshold and hasn't been played in the past ten days.
• I use XP, so it would have to be Windows compliant. (unless there's a Linux-only solution... that might tip me over the edge on the way to Ubuntu)

Any ideas?