diff --git a/src/formats.c b/src/formats.c
index 2ac2f0a5..b3e36db3 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -256,6 +256,7 @@ static const char* extension_list[] = {
     "kovs", //fake extension/header id for .kvs
     "kno",
     "kns",
+    "koe",
     "kraw",
     "ktac",
     "ktsl2asbin",
@@ -335,6 +336,7 @@ static const char* extension_list[] = {
     "msa",
     "msb",
     "msd",
+    "mse",
     "msf",
     "mss",
     "msv",
diff --git a/src/meta/encrypted.c b/src/meta/encrypted.c
index 1ecf8372..f30af3d8 100644
--- a/src/meta/encrypted.c
+++ b/src/meta/encrypted.c
@@ -80,12 +80,13 @@ VGMSTREAM* init_vgmstream_encrypted(STREAMFILE* sf) {
         return vgmstream;
     }
 
-    if (check_extensions(sf,"bgm")) {
+    if (check_extensions(sf,"bgm,mse,koe")) {
+        /* Studio Ring games [Nanami to Konomi no Oshiete ABC (PC), Oyatsu no Jikan (PC)]
+         * .bgm: BGM, .mse: SE, .koe: Voice */
         uint8_t keybuf[0x100];
         size_t key_size;
         off_t start;
 
-        /* Studio Ring games [Nanami to Konomi no Oshiete ABC (PC), Oyatsu no Jikan (PC)] */
         if (id != get_id32be("RIFF"))
             goto fail;