Ogg Vorbis is a completely open, patent-free, professional audio encoding and streaming technology with all the benefits of Open Source. This encoder allows to rip CD tracks to Ogg-Vorbis 1.1 files using the Winamp 5 built-in CD ripper (free or pro editions). Resultant files are adjustable through a quality setting (-1.00 to 10.00), although an estimated average bitrate is displayed for information.