diff --git a/src/dep/src/irrKlang/irrKlang.cpp b/src/dep/src/irrKlang/irrKlang.cpp
new file mode 100644
index 0000000..0652e96
--- /dev/null
+++ b/src/dep/src/irrKlang/irrKlang.cpp
@@ -0,0 +1,289 @@
+#include "irrKlang.h"
+
+/**
+ * This file contains a null-implementation of the irrKlang library, which doesn't do anything but
+ * provide stubs.
+ */
+namespace irrklang
+  {
+/*
+    class DummySoundDeviceList : public ISoundDeviceList
+      {
+      public:
+        void
+        grab()
+          {
+          }
+
+        bool
+        drop()
+          {
+            return true;
+          }
+
+        ik_s32
+        getDeviceCount()
+          {
+            return 0;
+          }
+
+        const char*
+        getDeviceID(ik_s32 index)
+          {
+            return "NULL";
+          }
+
+        const char*
+        getDeviceDescription(ik_s32 index)
+          {
+            return "NULL";
+          }
+      };
+
+    class DummySoundSource : public ISoundSource
+      {
+      private:
+        SAudioStreamFormat stream_format;
+
+      public:
+        void
+        grab()
+          {
+          }
+
+        bool
+        drop()
+          {
+            return true;
+          }
+
+        const ik_c8*
+        getName()
+          {
+            return "NULL";
+          }
+
+        void
+        setStreamMode(E_STREAM_MODE mode)
+          {
+          }
+
+        E_STREAM_MODE
+        getStreamMode()
+          {
+            return ESM_AUTO_DETECT;
+          }
+
+        ik_u32
+        getPlayLength()
+          {
+            return 0;
+          }
+
+        SAudioStreamFormat
+        getAudioFormat()
+          {
+            return stream_format;
+          }
+
+        bool
+        getIsSeekingSupported()
+          {
+            return true;
+          }
+
+        void
+        setDefaultVolume(ik_f32 volume = 1.0f)
+          {
+          }
+
+        ik_f32
+        getDefaultVolume()
+          {
+            return 1.0f;
+          }
+
+        void
+        setDefaultMinDistance(ik_f32 minDistance)
+          {
+          }
+
+        ik_f32
+        getDefaultMinDistance()
+          {
+            return -1;
+          }
+
+        void
+        setDefaultMaxDistance(ik_f32 maxDistance)
+          {
+          }
+
+        ik_f32
+        getDefaultMaxDistance()
+          {
+            return -1;
+          }
+
+        void
+        forceReloadAtNextUse()
+          {
+          }
+
+        void
+        setForcedStreamingThreshold(ik_s32 thresholdBytes)
+          {
+          }
+
+        ik_s32
+        getForcedStreamingThreshold()
+          {
+            return 1024 * 1024;
+          }
+
+        void*
+        getSampleData()
+          {
+            return 0;
+          }
+      };
+
+    class DummyAudioRecorder : public virtual IAudioRecorder
+      {
+      protected:
+        static DummySoundSource sound_source;
+        static SAudioStreamFormat stream_format;
+        bool recording;
+
+      public:
+        DummyAudioRecorder()
+          {
+
+          }
+
+        ISoundSource*
+        addSoundSourceFromRecordedAudio(const char* soundName)
+          {
+            return &sound_source;
+          }
+
+        void
+        clearRecordedAudioDataBuffer()
+          {
+
+          }
+
+        bool
+        isRecording()
+          {
+            return recording;
+          }
+
+        SAudioStreamFormat
+        getAudioFormat()
+          {
+            return stream_format;
+          }
+
+        void*
+        getRecordedAudioData()
+          {
+            return 0;
+          }
+
+        const char*
+        getDriverName()
+          {
+            return "NULL";
+          }
+      };
+
+    class DummyAudioStream : public IAudioStream
+      {
+      protected:
+        SAudioStreamFormat stream_format;
+
+      public:
+        ~DummyAudioStream()
+          {
+          }
+
+        SAudioStreamFormat
+        getFormat()
+          {
+            return stream_format;
+          }
+
+        bool
+        setPosition(ik_s32 pos) { return true; }
+
+        bool
+        getIsSeekingSupported()
+          {
+            return true;
+          }
+
+        ik_s32
+        readFrames(void* target, ik_s32 frameCountToRead) { return 0; }
+      };
+
+    class DummyAudioStreamLoader : public IAudioStreamLoader
+      {
+
+      };
+
+    class DummyFileFactory : public IFileFactory
+      {
+
+      };
+
+    class DummyFileReader : public IFileReader
+      {
+
+      };
+
+    class DummySound : public ISound
+      {
+
+      };
+
+    class DummySoundEffectControl : public ISoundEffectControl
+      {
+
+      };
+
+    class DummySoundEngine : public ISoundEngine
+      {
+
+      };
+*/
+
+    IRRKLANG_API ISoundEngine*
+    IRRKLANGCALLCONV createIrrKlangDevice(E_SOUND_OUTPUT_DRIVER driver, int options,
+        const char* deviceID, const char* sdk_version_do_not_use)
+      {
+        return 0;
+      }
+
+    IRRKLANG_API ISoundDeviceList*
+    IRRKLANGCALLCONV createSoundDeviceList(E_SOUND_OUTPUT_DRIVER driver, const char* sdk_version_do_not_use)
+      {
+        return 0;
+      }
+
+    IRRKLANG_API IAudioRecorder*
+    IRRKLANGCALLCONV createIrrKlangAudioRecorder(
+        ISoundEngine* irrKlangDeviceForPlayback, E_SOUND_OUTPUT_DRIVER driver, const char* deviceID,
+        const char* sdk_version_do_not_use)
+      {
+        return 0;
+      }
+
+    IRRKLANG_API ISoundDeviceList*
+    IRRKLANGCALLCONV createAudioRecorderDeviceList(
+        E_SOUND_OUTPUT_DRIVER drive, const char* sdk_version_do_not_use)
+      {
+        return 0;
+      }
+
+  }