I've been using iTunes for years, but my iPod is dying now and today I got a nice new phone (SGS2 ) which is going to replace it.

iTunes doesn't hold the ratings in the ID3 tag though - does anyone know any applications which will copy the internal iTunes ratings to the ID3 tag?

I've never used it myself, but you could look into Musicbrainz Picard. There's an iTunes Guide on the Wiki that might help.