Explore your music library in three dimensions, via an interactive cube wrapped in cover art (the app automatically fetches any art you don't already have). Swipe vertically to browse by artist or album, or horizontally to jump to a letter of the alphabet. Or just type part of the artist name or song title in the search box. But that's not nearly as fun.
WIRED "Play next" queue. Supports Last.FM scrobbling.
TIRED Rudimentary playlist options. Equalizer causes crashes.