Fix various minor errors in passing arguments to
PyArg_ParseTuple.
diff --git a/Modules/audioop.c b/Modules/audioop.c
index 8f5d30c..ce00975 100644
--- a/Modules/audioop.c
+++ b/Modules/audioop.c
@@ -472,8 +472,12 @@
         double aj_m1, aj_lm1;
         double sum_ri_2, sum_aij_2, sum_aij_ri, result, best_result, factor;
 
+	/* Passing a short** for an 's' argument is correct only
+	   if the string contents is aligned for interpretation
+	   as short[]. Due to the definition of PyStringObject,
+	   this is currently (Python 2.6) the case. */
         if ( !PyArg_ParseTuple(args, "s#s#:findfit",
-	                       &cp1, &len1, &cp2, &len2) )
+	                       (char**)&cp1, &len1, (char**)&cp2, &len2) )
                 return 0;
         if ( len1 & 1 || len2 & 1 ) {
                 PyErr_SetString(AudioopError, "Strings should be even-sized");
@@ -530,7 +534,7 @@
         double sum_ri_2, sum_aij_ri, result;
 
         if ( !PyArg_ParseTuple(args, "s#s#:findfactor",
-	                       &cp1, &len1, &cp2, &len2) )
+	                       (char**)&cp1, &len1, (char**)&cp2, &len2) )
                 return 0;
         if ( len1 & 1 || len2 & 1 ) {
                 PyErr_SetString(AudioopError, "Strings should be even-sized");
@@ -562,7 +566,8 @@
         double aj_m1, aj_lm1;
         double result, best_result;
 
-        if ( !PyArg_ParseTuple(args, "s#i:findmax", &cp1, &len1, &len2) )
+        if ( !PyArg_ParseTuple(args, "s#i:findmax", 
+			       (char**)&cp1, &len1, &len2) )
                 return 0;
         if ( len1 & 1 ) {
                 PyErr_SetString(AudioopError, "Strings should be even-sized");