From Orzeszek: Orzeszek Ratings is a utility to sync ratings and play counts between Windows Media Player and iTunes. Orzeszek Ratings will only sync the ratings and play counts between files that are in both your Windows Media Player library and your iTunes library. It ratings and play counts for any files that are converted when they're added to your library (like WMA files added to iTunes) won't be synced, since your Windows Media Player library and iTunes library are no longer referring to the same file. And, since Windows Media Player has no support for half-star ratings, half-star ratings are rounded up to the nearest full star when you sync ratings from iTunes to Windows Media Player.
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