Merge pull request #428 from mathertel/patch-1

prevent background task to get all CPU

examples/separate_audiotask/separate_audiotask.ino

@@ -74,6 +74,9 @@ void audioTask(void *parameter) {
             }
         }
         audio.loop();
+        if (!audio.isRunning()) {
+          sleep(1);
+        }
     }
 }