Audio Toolkit CDROM, Sep 1997.  Walnut Creek CDROM.
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 Spectrum analyzers
 path: \msdos\spectrum 
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cthugha5.zip Cthugha - An Oscilliscope on Acid v5.0
gscope09.zip A Stereo Scope program for the GUS
gss100.zip   Graphical Sound System v1.0 by J. Meacham
guscthug.zip A GUS hack version of Cthugha v3.1
osci111.zip  OSCI SB Oscilloscope v1.11
spect.zip    Spectrum Analyzer for the GUS