In the world of MP3, I'm very much on the nursery slopes. Trying to choose a player on the basis of which formats are supported is a complete non-starter for me. Would someone kindly put me in the picture? I mean, people mention Ogg Vorbis with great awe, they say that you can't mix iPod with WMA. I assume some are better than others, but havn't a clue which, what or why.