The file shitty file format that windows media player uses. Sucks hardcore, but is used because of its smaller file size than mp3s and the great number of digital music players that play them. Thank god for mp4 and ipods.
wma is inferior to vorbis which is inferior to mp4
Plays mp4/AAC (better than shitty vorbis which no one in their right mind would put music in. no one fuckin' uses it and they never will). The menus can be re-arranged to fit your needs (i.e. switching to random quickly. Lightweight but with a large capacity hard drive. Given it doesn't have radio (which they should have added a long time ago), it has everything you need (by the way, what the fuck could an ethernet card do for an iPod anyway? Let you surf the internet? How about you list things that it truely is lacking than making shit up?)
iPods are better than Rio Karmas and other such shit