diff --git a/docs/quality.md b/docs/quality.md
index 5c69578e..39327334 100644
--- a/docs/quality.md
+++ b/docs/quality.md
@@ -24,15 +24,14 @@ factors to consider:
 There are a number of sample rate converters available for downloading but I
 will limit the comparison of Secret Rabbit Code to the following:
 
-- [sndfile-resample](http://libsndfile.github.io/libsamplerate/download.html)
-  which is a program (which uses libsamplerate) from the **examples/** directory
-  of the Secret Rabbit Code source code distribution.
+- sndfile-resample which is a program (which uses libsamplerate) from the
+  [sndfile-tools](https://github.com/libsndfile/sndfile-tools) package.
 - [Resample](https://ccrma.stanford.edu/~jos/resample/) by Julius O Smiths which
   seems to have been the first high quality converter available as source code.
-- [ResampAudio](http://www.tsp.ece.mcgill.ca/MMSP/Documents/Software/AFsp/ResampAudio.html)
-  which is part of [Audio File Programs and Routines](http://www.tsp.ece.mcgill.ca/MMSP/Documents/Software/AFsp/AFsp.html)
+- [ResampAudio](https://www.mmsp.ece.mcgill.ca/Documents/Software/Packages/AFsp/AFsp/ResampAudio.html)
+  which is part of the [AFsp Package](https://www-mmsp.ece.mcgill.ca/Documents/Downloads/AFsp/)
   by Peter Kabal.
-- [SoX](http://home.sprynet.com/~cbagwell/sox.html) which is maintained by Chris
+- [SoX](https://sourceforge.net/projects/sox/) which is maintained by Chris
   Bagwell. SoX is also able to perform some low quality sample rate conversions
   but these will not be investigated.
 - [Shibatch](http://shibatch.sourceforge.net/) which seems to be a frequency
diff --git a/tests/calc_snr.c b/tests/calc_snr.c
index 35a37f77..81851184 100644
--- a/tests/calc_snr.c
+++ b/tests/calc_snr.c
@@ -169,7 +169,7 @@ find_snr (const double *magnitude, int len, int expected_peaks)
 	qsort (peaks, peak_count, sizeof (PEAK_DATA), peak_compare) ;
 
 	snr = peaks [0].peak ;
-	for (k = 1 ; k < peak_count ; k++)
+	for (k = expected_peaks ; k < peak_count ; k++)
 		if (fabs (snr - peaks [k].peak) > 10.0)
 			return fabs (peaks [k].peak) ;
 
diff --git a/tests/src-evaluate.c b/tests/src-evaluate.c
index d55d6483..d9a99432 100644
--- a/tests/src-evaluate.c
+++ b/tests/src-evaluate.c
@@ -74,15 +74,15 @@ int
 main (int argc, char *argv [])
 {	static RESAMPLE_PROG resample_progs [] =
 	{	{	"sndfile-resample",
-			"examples/sndfile-resample --version",
+			"sndfile-resample --version",
 			"libsamplerate",
-			"examples/sndfile-resample --max-speed -c 0 -to %d source.wav destination.wav",
+			"sndfile-resample --max-speed -c 0 -to %d source.wav destination.wav",
 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
 			},
 		{	"sox",
 			"sox -h 2>&1",
 			"sox",
-			"sox source.wav -r %d destination.wav resample 0.835",
+			"sox source.wav -r %d destination.wav",
 			SF_FORMAT_WAV | SF_FORMAT_PCM_32
 			},
 		{	"ResampAudio",
@@ -354,7 +354,7 @@ measure_snr (const RESAMPLE_PROG *prog, int *output_samples, int verbose)
 		if ((retval = system (command)) != 0)
 			printf ("system returned %d\n", retval) ;
 
-		snr = measure_destination_wav ("destination.wav", &sample_count, snr_test->pass_band_peaks) ;
+		snr = measure_destination_wav ("destination.wav", &sample_count, snr_test [k].pass_band_peaks) ;
 
 		*output_samples += sample_count ;