diff --git a/desktop/opencubicplayer.xml b/desktop/opencubicplayer.xml
index 8e72bf51..ad4704fd 100644
--- a/desktop/opencubicplayer.xml
+++ b/desktop/opencubicplayer.xml
@@ -496,5 +496,6 @@
  <mime-type type="audio/x-ym">
   <comment>YM2149 register dumps, PSG audio</comment>
   <glob pattern="*.ym"/>
+  <glob pattern="*.mix"/>
  </mime-type>
 </mime-info>
diff --git a/playym/ymtype.cpp b/playym/ymtype.cpp
index f9268be8..14c98a4f 100644
--- a/playym/ymtype.cpp
+++ b/playym/ymtype.cpp
@@ -385,6 +385,7 @@ OCP_INTERNAL int ym_type_init (PluginInitAPI_t *API)
 	struct moduletype mt;
 
 	API->fsRegisterExt("YM");
+	API->fsRegisterExt("MIX");
 
 	mt.integer.i = MODULETYPE("YM");
 	API->fsTypeRegister (mt, YM_description, "plOpenCP", &ymPlayer);