Ogg Vorbis

A free open audioformat (.ogg) developed by Xiph.org Foundation. Uses various technologies to create audioquality comparable with mp3PRO at low bitrates and MP3 at high bitrates. Encodes and decodes fast. Available on many platforms. Opensource. Beats wordMP3/word and wordWMA/word fair and square in terms of sound quality. Streamable. Plays in e.x. Winamp.