One in which fnv uses for most of it's audio files (all of them if you have not tinkered with it).
In other words it is an open source audio format. Without going into too much detail, Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free, general-purpose compressed audio format for mid to high quality (8kHz-48.0kHz, 16+ bit, polyphonic) audio and music at fixed and variable bitrates from 16 to 128 kbps/channel. Well, the question is what does it do for you?
