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	Paul L's patch for bug 525, which is minimally invasive for fix the problem.
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		@@ -1921,6 +1921,7 @@ void TrackArtist::DrawClipSpectrum(WaveTrack *track,
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   else {
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      minFreq = GetSpectrumLogMinFreq(ifreq/1000.0);
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      if(minFreq < 1)
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         // Paul L:  I suspect this line is now unreachable
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         minFreq = ifreq/1000.0;
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   }
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@@ -2967,6 +2968,8 @@ void TrackArtist::UpdatePrefs()
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   mLogMinFreq = gPrefs->Read(wxT("/SpectrumLog/MinFreq"), -1);
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   if( mLogMinFreq < 0 )
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      mLogMinFreq = mMinFreq;
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   if (mLogMinFreq < 1)
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      mLogMinFreq = 1;
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   mWindowSize = gPrefs->Read(wxT("/Spectrum/FFTSize"), 256);
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   mIsGrayscale = (gPrefs->Read(wxT("/Spectrum/Grayscale"), 0L) != 0);
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