Songbird is an open-source customizable music player that's under active development. It is integrated with these Web 2.0 services: mashTape, SHOUTcast Radio, Last.fm Scrobbling, and Songkick concert tickets. You can enhance Songbird with community-contributed plugins like Media Flow. Features include: GStreamer, Smart Playlists, Built-In Web Browser, Multi-language Support, Automatic Updates, Setup Assistant, Custom User Interface, Library Management, Developer Support.