Xiph.Org is a non-profit organization dedicated to creating free and open protocols and software for multimedia processing. Their Icecast project, accessible at http://icecast.org, is a streaming media server which supports various audio and video formats. It is widely used for internet radio and streaming purposes, offering robust features and flexibility for users to set up their own media streams. Xiph.Org promotes open-source development and aims to provide tools that are freely available to the public, encouraging the use of open standards in multimedia technologies.