Add Single File Demo (Sample)

utils.py

@@ -220,7 +220,8 @@ def build_df5(oneVoice, multiVoice, sumNoVoice, sumOneVoice, sumMultiVoice, curr
     summativeMulti = sum(multiTimeList) if multiTimeList else 1
     safeOneVoice   = sumOneVoice if sumOneVoice > 0 else 1
 
-    base = [sumNoVoice / currTotalTime, sumOneVoice / currTotalTime, sumMultiVoice / currTotalTime]
+    safeTotalTime = currTotalTime if currTotalTime > 0 else 1
+    base = [sumNoVoice / safeTotalTime, sumOneVoice / safeTotalTime, sumMultiVoice / safeTotalTime]
 
     timeStrings      = su.timeToString(timeList)      if timeList      else []
     multiTimeStrings = su.timeToString(multiTimeList) if multiTimeList else []