diff --git a/d1x-rebirth/arch/include/digi_mixer.h b/common/include/digi_mixer.h
similarity index 100%
rename from d1x-rebirth/arch/include/digi_mixer.h
rename to common/include/digi_mixer.h
diff --git a/d2x-rebirth/arch/include/digi_mixer.h b/d2x-rebirth/arch/include/digi_mixer.h
deleted file mode 100644
index 6a12f591a..000000000
--- a/d2x-rebirth/arch/include/digi_mixer.h
+++ /dev/null
@@ -1,22 +0,0 @@
-#ifndef __DIGI_MIXER__
-#define __DIGI_MIXER__
-
-#include "fix.h"
-
-int digi_mixer_init();
-void digi_mixer_close();
-int digi_mixer_start_sound(short, fix, int, int, int, int, int);
-void digi_mixer_set_channel_volume(int, int);
-void digi_mixer_set_channel_pan(int, int);
-void digi_mixer_stop_sound(int);
-void digi_mixer_end_sound(int);
-int digi_mixer_is_sound_playing(int);
-int digi_mixer_is_channel_playing(int);
-void digi_mixer_reset();
-void digi_set_max_channels(int);
-int digi_get_max_channels();
-void digi_mixer_stop_all_channels();
-void digi_mixer_set_digi_volume(int);
-void digi_mixer_debug();
-
-#endif