Add Enter/ExitCriticalSection to Periphery code

examples/PoolBox/application/src/asset_mgr.cpp

@@ -111,7 +111,7 @@ namespace Assets {
 
     namespace XAAudio {
         void play_fox() {
-            CDXA::play(lba, FOX_XA, 1, true);
+            CDXA::play(lba, FOX_XA, 0, false);
         }
     }
 }