<i>Vorbis, however is really in the league of mp3/aac/wmv, so in the case of audio, picking Vorbis is really a no-brainer.</i><p>Maybe on desktops, but not on portables.  For whatever reason (bad implementations?), Ogg Vorbis takes more processing to decode than mp3.  Numerous portable players have shorter battery lives when playing Ogg.<p><a href="http://www.hydrogenaudio.org/forums/lofiversion/index.php/t52807.html" rel="nofollow">http://www.hydrogenaudio.org/forums/lofiversion/index.php/t5...</a>