how can i move music from windows media onto my i-tunes?

I have about 11,000 songs, that are mostly albums on my windows media, I'd like to move them to my i-tunes, how do I do this?

11:112011-03-02T00:34:26Z

Any song that is a .wma file or whatever will need to be converted. mp3 and and mp4 are the file types supported by itunes. Unfortunately, by default, all the music you ripped onto windows media player from cd are made as wma file. You can find the setting in wmp to make the default rip format as mp3, but for now, its going to be a long conversion process for you.