.2.0, Vorbisfile is able to access the
Vorbis content in mixed-media Ogg streams, not just Vorbis-only
streams.  For example, Vorbisfile may be used to open and access the
audio from an Ogg stream consisting of Theora video and Vorbis audio.
Vorbisfile 1.2.0 decodes the first logical audio stream of each
physical stream section.<p>

<dt><b>[d] Faster testing for Vorbis files</b><p>
<dd><a href="ov_test.html">ov_test()</a> and <a
href="ov_test_callbacks.html">ov_test_callbacks()</a> provide less
computationa