diff -ur audacious-plugins-2.2-orig/src/adplug/core/ksm.cxx audacious-plugins-2.2/src/adplug/core/ksm.cxx
--- audacious-plugins-2.2-orig/src/adplug/core/ksm.cxx	2009-12-14 17:25:31.000000000 -0500
+++ audacious-plugins-2.2/src/adplug/core/ksm.cxx	2009-12-14 17:30:54.000000000 -0500
@@ -310,7 +310,7 @@
   {
     for (i = 0; i < 11; i++)
       instbuf[i] = inst[trinst[11]][i];
-    instbuf[1] = ((instbuf[1] & 192) | (trvol[11]) ^ 63);
+    instbuf[1] = ((instbuf[1] & 192) | ((trvol[11]) ^ 63));
     setinst (6, instbuf[0], instbuf[1], instbuf[2], instbuf[3], instbuf[4],
              instbuf[5], instbuf[6], instbuf[7], instbuf[8], instbuf[9],
              instbuf[10]);
@@ -318,8 +318,8 @@
       instbuf[i] = inst[trinst[12]][i];
     for (i = 5; i < 11; i++)
       instbuf[i] = inst[trinst[15]][i];
-    instbuf[1] = ((instbuf[1] & 192) | (trvol[12]) ^ 63);
-    instbuf[6] = ((instbuf[6] & 192) | (trvol[15]) ^ 63);
+    instbuf[1] = ((instbuf[1] & 192) | ((trvol[12]) ^ 63));
+    instbuf[6] = ((instbuf[6] & 192) | ((trvol[15]) ^ 63));
     setinst (7, instbuf[0], instbuf[1], instbuf[2], instbuf[3], instbuf[4],
              instbuf[5], instbuf[6], instbuf[7], instbuf[8], instbuf[9],
              instbuf[10]);
@@ -327,8 +327,8 @@
       instbuf[i] = inst[trinst[14]][i];
     for (i = 5; i < 11; i++)
       instbuf[i] = inst[trinst[13]][i];
-    instbuf[1] = ((instbuf[1] & 192) | (trvol[14]) ^ 63);
-    instbuf[6] = ((instbuf[6] & 192) | (trvol[13]) ^ 63);
+    instbuf[1] = ((instbuf[1] & 192) | ((trvol[14]) ^ 63));
+    instbuf[6] = ((instbuf[6] & 192) | ((trvol[13]) ^ 63));
     setinst (8, instbuf[0], instbuf[1], instbuf[2], instbuf[3], instbuf[4],
              instbuf[5], instbuf[6], instbuf[7], instbuf[8], instbuf[9],
              instbuf[10]);
diff -ur audacious-plugins-2.2-orig/src/adplug/core/s3m.cxx audacious-plugins-2.2/src/adplug/core/s3m.cxx
--- audacious-plugins-2.2-orig/src/adplug/core/s3m.cxx	2009-12-14 17:25:31.000000000 -0500
+++ audacious-plugins-2.2/src/adplug/core/s3m.cxx	2009-12-14 17:39:52.000000000 -0500
@@ -624,8 +624,8 @@
   opl->write (0xa0 + chan, channel[chan].freq & 255);
   if (channel[chan].key)
     opl->write (0xb0 + chan,
-                ((channel[chan].freq & 768) >> 8) +
-                (channel[chan].oct << 2) | 32);
+                (((channel[chan].freq & 768) >> 8) +
+                (channel[chan].oct << 2)) | 32);
   else
     opl->write (0xb0 + chan,
                 ((channel[chan].freq & 768) >> 8) + (channel[chan].oct << 2));