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diff --git a/audio/xmms-shn/pkg-descr b/audio/xmms-shn/pkg-descr
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+xmms-shn provides playback support for shorten (.shn) files in
+XMMS.  Real-time seeking support is provided for .shn files that
+have accompanying seek tables generated by shorten 3.x.  Otherwise,
+seeking is not supported.
+
+Wayne Stielau has extended shorten 2.3 to support the creation of
+seek tables.  Seek tables are simply descriptions of the internal
+state of the shorten algorithm at specific points in the decompression.
+This allows a modified shorten decoder to restore the decoder state
+of the shorten algorithm for a point at (or very close to) the
+desired seek point.
+
+The current implementation creates a seek table entry once every
+25600 samples.  For 'CD-quality' WAVE data (44100 samples/sec),
+this provides a granularity of 1 seek table entry per 25600/44100
+= 0.58 seconds, more than what is needed by either XMMS or WinAmp.
+
+WWW: http://sdf.lonestar.org/~jason/shn-utils/xmms-shn/