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diff --git a/extern/audaspace/include/fx/Fader.h b/extern/audaspace/include/fx/Fader.h
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+/*******************************************************************************
+ * Copyright 2009-2016 Jörg Müller
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ ******************************************************************************/
+
+#pragma once
+
+/**
+ * @file Fader.h
+ * @ingroup fx
+ * The Fader class.
+ */
+
+#include "fx/Effect.h"
+#include "fx/FaderReader.h"
+
+AUD_NAMESPACE_BEGIN
+
+/**
+ * This sound fades another sound.
+ * If the fading type is FADE_IN, everything before the fading start will be
+ * silenced, for FADE_OUT that's true for everything after fading ends.
+ */
+class AUD_API Fader : public Effect
+{
+private:
+	/**
+	 * The fading type.
+	 */
+	const FadeType m_type;
+
+	/**
+	 * The fading start.
+	 */
+	const float m_start;
+
+	/**
+	 * The fading length.
+	 */
+	const float m_length;
+
+	// delete copy constructor and operator=
+	Fader(const Fader&) = delete;
+	Fader& operator=(const Fader&) = delete;
+
+public:
+	/**
+	 * Creates a new fader sound.
+	 * \param sound The input sound.
+	 * \param type The fading type.
+	 * \param start The time where fading should start in seconds.
+	 * \param length How long fading should last in seconds.
+	 */
+	Fader(std::shared_ptr<ISound> sound,
+	                 FadeType type = FADE_IN,
+	                 float start = 0.0f, float length = 1.0f);
+
+	/**
+	 * Returns the fading type.
+	 */
+	FadeType getType() const;
+
+	/**
+	 * Returns the fading start.
+	 */
+	float getStart() const;
+
+	/**
+	 * Returns the fading length.
+	 */
+	float getLength() const;
+
+	virtual std::shared_ptr<IReader> createReader();
+};
+
+AUD_NAMESPACE_END