diff --git a/src/meta/bnk_sony.c b/src/meta/bnk_sony.c
index 4f83ddb9..052a54f5 100644
--- a/src/meta/bnk_sony.c
+++ b/src/meta/bnk_sony.c
@@ -146,6 +146,7 @@ VGMSTREAM* init_vgmstream_bnk_sony(STREAMFILE* sf) {
                 break;
 
             case 0x1a: /* Demon's Souls (PS5) */
+            case 0x23: /* The Last of Us (PC) */
 
             default:
                 vgm_logi("BNK: unknown version %x (report)\n", sblk_version);
diff --git a/src/meta/ogg_vorbis.c b/src/meta/ogg_vorbis.c
index 4141b533..d9e24289 100644
--- a/src/meta/ogg_vorbis.c
+++ b/src/meta/ogg_vorbis.c
@@ -479,7 +479,7 @@ static int _init_vgmstream_ogg_vorbis_tests(STREAMFILE* sf, ogg_vorbis_io_config
         }
     }
 
-    /* "Ultramarine3" (???) */
+    /* .um3: Ultramarine / Bruns Engine files  */
     if (check_extensions(sf,"um3")) {
         if (!is_id32be(0x00,sf, "OggS")) {
             ovmi->decryption_callback = um3_ogg_decryption_callback;
diff --git a/src/meta/ogv_3rdeye.c b/src/meta/ogv_3rdeye.c
index 20f3be37..57912468 100644
--- a/src/meta/ogv_3rdeye.c
+++ b/src/meta/ogv_3rdeye.c
@@ -1,7 +1,7 @@
 #include "meta.h"
 #include "../coding/coding.h"
 
-/* OGV - .ogg container (not related to ogv video) [Bloody Rondo (PC)] */
+/* OGV - .ogg container (not related to ogv video) [Bloody Rondo (PC), Shinigami no Testament (PC)] */
 VGMSTREAM* init_vgmstream_ogv_3rdeye(STREAMFILE* sf) {
     uint32_t subfile_offset, subfile_size;
 
diff --git a/src/meta/riff.c b/src/meta/riff.c
index 8f7ffe81..2e5a73fd 100644
--- a/src/meta/riff.c
+++ b/src/meta/riff.c
@@ -191,11 +191,11 @@ static int read_fmt(int big_endian, STREAMFILE* sf, off_t offset, riff_fmt_chunk
             break;
 
 #ifdef VGM_USE_MPEG
-        case 0x0055: /* MP3 [Bear in the Big Blue House: Bear's Imagine That! (PC)] (official) */
+        case 0x0055: /* MP3 [Bear in the Big Blue House: Bear's Imagine That! (PC), Eclipse (PC)] (official) */
             fmt->coding_type = coding_MPEG_custom;
-            /* some oddities, unsure if part of standard: 
+            /* some oddities, unsure if part of standard:
              * - block size is 1 (in mono)
-             * - bps is 16
+             * - bps is 16 for some games
              * - extra size 0x0c, has channels? and (possibly) approx frame size */
             break;
 #endif
diff --git a/src/meta/xnb_lz4mg.h b/src/meta/xnb_lz4mg.h
index 9a2e98aa..e6833472 100644
--- a/src/meta/xnb_lz4mg.h
+++ b/src/meta/xnb_lz4mg.h
@@ -79,6 +79,8 @@ static int lz4mg_decompress(lz4mg_stream_t* strm) {
     int src_pos = 0;
     uint8_t next_len, next_val;
 
+    /* MSVC 64 19.30+ has a /O2 bug where some states aren't handled properly unless a fallthrough is used.
+     * Seems related to src_pos and doesn't seem fixed by using sub-functions or avoiding gotos. */
 
     while (1) {
         /* mostly linear state machine, but it may break anytime when reaching dst or src
@@ -154,7 +156,7 @@ static int lz4mg_decompress(lz4mg_stream_t* strm) {
                 } while (next_len == LZ4MG_VARLEN_CONTINUE);
 
                 ctx->state = SET_MATCH;
-                // Falthrough for MSVC
+                //break; // Falthrough for MSVC
 
             case SET_MATCH:
                 ctx->match_len += LZ4MG_MIN_MATCH_LEN;
@@ -164,7 +166,7 @@ static int lz4mg_decompress(lz4mg_stream_t* strm) {
                     ctx->match_pos = LZ4MG_WINDOW_SIZE + ctx->match_pos;
 
                 ctx->state = COPY_MATCH;
-                // Fallthrough for MSVC
+                //break; // Fallthrough for MSVC
 
             case COPY_MATCH:
                  while (ctx->match_len > 0) {