The Aether Cone [$400] is a thinking music player that learns what you like to listen to and plays the perfect sound/song for that moment. Think of it like having your own (very stylish) personal DJ. The Aether Cone is available exclusively to Rdio Subscribers. Rdio is the groundbreaking digital music service that is reinventing the way people discover, listen to, and share music. With on-demand access to over 30 million songs, Rdio connects people with music and makes it easy to search for and instantly play any song, album, artist, or playlist.