Willholmania

I'd love to move from Mac OS X to Ubuntu, but two things are stopping me - music and photos. I have hundreds of iTunes Playlists that I've made over many years - for kids, parents friends etc, and don't want to lose any of them. So I need to be able to migrate all my iTunes library, including all playlists into a music player on Ubuntu. Secondly, I have thousands of photos, grouped int albums. These also need to be moved across, with the albums intact. Can anyone help?