SHOUTcast Radio is one of the largest directories of professionally and community programmed online radio stations in the world. Today SHOUTcast features over 22,000 stations from around the world. If you're into popular or indie music, or want to check out local or world programming, you're sure to find something you like on SHOUTcast Radio. The SHOUTcast Radio Toolbar allows you to explore SHOUTcast and search for stations by keyword or browse across 20+ popular music genres. The toolbar also provides instant access to web search as well as customization options by adding your favorite websites from the button gallery. SHOUTcast provides free-of-charge audio broadcasting software for those who want to create a radio station. Anyone on the internet can broadcast audio from their computer to listeners across the Internet or any other IP-based network (Office LANs, college campuses, etc.). SHOUTcast's underlying technology for audio delivery is MPEG Layer 3, also known as MP3 technology. The SHOUTcast system can deliver audio in a live situation, or can deliver audio on-demand for archived broadcasts if made available by the broadcaster.