Moving Music and their ratings from PC to mac

Hi guys,
i worked with Cross on my laptop with windows 7. I rated a lot of mp3s with the stars and dont want to do this again when using Cross in the future with my macbook :/
So now the question: Are the ratings saved into the mp3s? Can i copy the mp3s from my windows 7 to my mac and import them into Cross at my mac without having to rate all mp3s again?
What about the library files?
Kind regards
i worked with Cross on my laptop with windows 7. I rated a lot of mp3s with the stars and dont want to do this again when using Cross in the future with my macbook :/
So now the question: Are the ratings saved into the mp3s? Can i copy the mp3s from my windows 7 to my mac and import them into Cross at my mac without having to rate all mp3s again?
What about the library files?
Kind regards