Playlist Machinery - Tools that help you create & organize your Spotify playlists
Kobo Audiobooks - Experience the joy of being told a story
Playmoss - Create playlists from YouTube, Vimeo and SoundCloud
jamhub - Remote music collaboration
podsync - Simple and free service that lets you listen to any YouTube or Vimeo channels, playlists or user videos in podcast format
Jukebox - Collaborative music player