This tool is used to convert MPEG-1 Audio Layer 3 (mp3) to Ogg Vorbis (ogg).

MP3 is a coding format for digital audio. Originally defined as the third audio format of the MPEG-1 standard, it was retained and further extended—defining additional bit-rates and support for more audio channels.

Ogg is a free, open container format maintained by the Xiph.Org Foundation. The creators of the Ogg format claim that it is unrestricted by software patents and is designed to provide for efficient streaming and manipulation of high-quality digital multimedia.