ped into multiple separate files.  Requesting to
seek to a position before the beginning of such a file will seek to
the position where audio begins.

<p>As of vorbisfile version 1.68, seeking also optionally provides
automatic crosslapping to eliminate clicks and other discontinuity
artifacts at seeking boundaries.  This fetaure is of particular
interest to player and game developers implementing dynamic music and
audio engines, or others looking for smooth transitions within a
single sample or ac