diff --git a/other/get_wavfile_props.sh b/other/get_wavfile_props.sh
index 85b75aa9e9709fbc1194c51ca1c2c0b3c720ffb3..6e92d5b1dc9d3c4e631179ab841a4560288fcf61 100755
--- a/other/get_wavfile_props.sh
+++ b/other/get_wavfile_props.sh
@@ -38,20 +38,45 @@ then
   exit 1
 fi
 
-InfoAudio=InfoAudio
 file=$1
 
+system=`uname -s`
+
+InfoAudio=InfoAudio
+if [ "$system" = "Darwin" ]; then
+    md5=md5
+else
+    md5=md5sum
+fi
+
+# check, whether we have set md5 correctly
+if ! command -v $md5 &> /dev/null
+then
+    echo "Executable for calculating md5 could not be dected. Aborting."
+    exit
+fi
+
 filename=`basename $file`
-md5sum=`md5sum -b $1 | cut -d" " -f1`
+if [ "$md5" = "md5sum" ]; then
+    md5sum=`$md5 -b $file | cut -d" " -f1`
+elif [ "$md5" = "md5" ]; then
+    md5sum=`$md5 -r $file | cut -d" " -f1`
+else
+    echo "No valid executable for calculating md5. Aborting."
+    exit
+fi
 
+# getting all info from InfoAudio - storing in res
 res=`$InfoAudio $file`
 
+# paring res
 sampleFreq=`echo "$res" | grep -m1 "Sampling frequency" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`
 
 numberSamples=`echo "$res" | grep -m1 "No. frames" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`
 
 aligned20ms=false
-if [ $(expr $numberSamples % 960) == "0" ]; then
+remainder=$(expr $numberSamples % 960)
+if [ $remainder -eq 0 ]; then
   aligned20ms=true
 fi
 
@@ -61,5 +86,6 @@ dataType=`echo "$res" | grep -m1 "Data type" | sed -e 's/\([a-zA-Z\. ]*: \)\([[a
 
 dataByteOrder=`echo "$res" | grep -m1 "Data byte order" | sed -e 's/\([a-zA-Z\. ]*: \)\([[a-zA-Z0-9-]*\)\(.*\)/\2/g'`
 
+# printing out
 echo "${filename};${md5sum};${sampleFreq};${numberSamples};${aligned20ms};${numberChannels};${dataType};${dataByteOrder}"