The Free Lossless Audio Codec (FLAC) was developed by the Xiph.org Foundation and is a free, open-source format that has no restrictions on use and no licensing fees. There is also a metadata component: a ``cue sheet'' metadata block can be used to store a compact disc's track listing and index points. FLAC can be used with any PCM data with bitdepths from 4 to 32, sampling rates from 1 Hz to 1 MHz, and one to eight channels.3.7 Typical compression rates run between 30 and 50 percent A technical strength of FLAC is its ability to be decoded quickly, which makes it suitable for streaming over fast networks. FLAC data is often contained in Xiph.org's Ogg file format.3.8