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diff --git a/extern/audaspace/include/fx/PlaybackManager.h b/extern/audaspace/include/fx/PlaybackManager.h
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+++ b/extern/audaspace/include/fx/PlaybackManager.h
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+/*******************************************************************************
+* Copyright 2015-2016 Juan Francisco Crespo Galán
+*
+* 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 PlaybackManager.h
+* @ingroup fx
+* The PlaybackManager class.
+*/
+
+#include "PlaybackCategory.h"
+#include "devices/IDevice.h"
+#include "ISound.h"
+
+#include <unordered_map>
+#include <memory>
+
+AUD_NAMESPACE_BEGIN
+
+/**
+* This class allows to control groups of playing sounds easily.
+* The sounds are part of categories.
+*/
+class AUD_API PlaybackManager
+{
+private:
+	/**
+	* Unordered map of categories, each category has different name.
+	*/
+	std::unordered_map<unsigned int, std::shared_ptr<PlaybackCategory>> m_categories;
+
+	/**
+	* Device used for playback.
+	*/
+	std::shared_ptr<IDevice> m_device;
+
+	/**
+	* The current key used for new categories.
+	*/
+	unsigned int m_currentKey;
+
+	// delete copy constructor and operator=
+	PlaybackManager(const PlaybackManager&) = delete;
+	PlaybackManager& operator=(const PlaybackManager&) = delete;
+
+public:
+	/**
+	* Creates a new PlaybackManager.
+	* \param device A shared pointer to the device which will be used for playback.
+	*/
+	PlaybackManager(std::shared_ptr<IDevice> device);
+
+	/**
+	* Adds an existent category to the manager and returns a key to access it.
+	* \param category The category to be added.
+	* \return The category key.
+	*/
+	unsigned int addCategory(std::shared_ptr<PlaybackCategory> category);
+
+	/**
+	* Adds an existent category to the manager and returns a key to access it.
+	* \param volume The volume of the new category.
+	* \return The category key.
+	*/
+	unsigned int addCategory(float volume);
+
+	/**
+	* Plays a sound and adds it to a new or existent category.
+	* \param sound The sound to be played and added to a category.
+	* \param catKey Key of the category.
+	* \return The handle of the playback; nullptr if the sound couldn't be played.
+	*/
+	std::shared_ptr<IHandle> play(std::shared_ptr<ISound> sound, unsigned int catKey);
+
+	/**
+	* Resumes all the paused sounds of a category.
+	* \param catKey Key of the category.
+	* \return
+	*        - true if succesful.
+	*        - false if the category doesn't exist.
+	*/
+	bool resume(unsigned int catKey);
+
+	/**
+	* Pauses all current playing sounds of a category.
+	* \param catKey Key of the category.
+	* \return
+	*        - true if succesful.
+	*        - false if the category doesn't exist.
+	*/
+	bool pause(unsigned int catKey);
+
+	/**
+	* Retrieves the volume of a category.
+	* \param catKey Key of the category.
+	* \return The volume value of the category. If the category doesn't exist it returns a negative number.
+	*/
+	float getVolume(unsigned int catKey);
+
+	/**
+	* Sets the volume for a category.
+	* \param volume The volume.
+	* \param catKey Key of the category.
+	* \return
+	*        - true if succesful.
+	*        - false if the category doesn't exist.
+	*/
+	bool setVolume(float volume, unsigned int catKey);
+
+	/**
+	* Stops and erases a category of sounds.
+	* \param catKey Key of the category.
+	* \return
+	*        - true if succesful.
+	*        - false if the category doesn't exist.
+	*/
+	bool stop(unsigned int catKey);
+
+	/**
+	* Removes all the invalid handles of all the categories.
+	* Only needed if individual sounds are stopped with their handles.
+	*/
+	void clean();
+
+	/**
+	* Removes all the invalid handles of a category.
+	* Only needed if individual sounds are stopped with their handles.
+	* \param catKey Key of the category.
+	* \return
+	*        - true if succesful.
+	*        - false if the category doesn't exist.
+	*/
+	bool clean(unsigned int catKey);
+
+	/**
+	* Retrieves the device of the PlaybackManager.
+	* \return A shared pointer to the device used by the playback manager.
+	*/
+	std::shared_ptr<IDevice> getDevice();
+};
+
+AUD_NAMESPACE_END