diff --git a/src/formats.c b/src/formats.c
index 3d27fd46..3d31de06 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -39,6 +39,7 @@ static const char* extension_list[] = {
     //"ac3", //common, FFmpeg/not parsed (AC3)
     "acb",
     "acm",
+    "acx",
     "ad", //txth/reserved [Xenosaga Freaks (PS2)]
     "adc", //txth/reserved [Tomb Raider The Last Revelation (DC), Tomb Raider Chronicles (DC)]
     "adm",
diff --git a/src/libvgmstream.vcproj b/src/libvgmstream.vcproj
index d8410760..a6f34814 100644
--- a/src/libvgmstream.vcproj
+++ b/src/libvgmstream.vcproj
@@ -500,6 +500,10 @@
                     RelativePath=".\meta\acm.c"
                     >
                 </File>
+                <File
+                    RelativePath=".\meta\acx.c"
+                    >
+                </File>
                 <File
                     RelativePath=".\meta\adp_konami.c"
                     >
diff --git a/src/libvgmstream.vcxproj b/src/libvgmstream.vcxproj
index e7e5698f..ed9c59f6 100644
--- a/src/libvgmstream.vcxproj
+++ b/src/libvgmstream.vcxproj
@@ -282,6 +282,7 @@
     <ClCompile Include="meta\aax.c" />
     <ClCompile Include="meta\acb.c" />
     <ClCompile Include="meta\acm.c" />
+    <ClCompile Include="meta\acx.c" />
     <ClCompile Include="meta\adp_konami.c" />
     <ClCompile Include="meta\adpcm_capcom.c" />
     <ClCompile Include="meta\ads.c" />
diff --git a/src/libvgmstream.vcxproj.filters b/src/libvgmstream.vcxproj.filters
index 65c92f9a..0bbf0d2a 100644
--- a/src/libvgmstream.vcxproj.filters
+++ b/src/libvgmstream.vcxproj.filters
@@ -364,6 +364,9 @@
     <ClCompile Include="meta\acm.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="meta\acx.c">
+      <Filter>meta\Source Files</Filter>
+    </ClCompile>
     <ClCompile Include="meta\adp_konami.c">
       <Filter>meta\Source Files</Filter>
     </ClCompile>
diff --git a/src/meta/acx.c b/src/meta/acx.c
new file mode 100644
index 00000000..430ea448
--- /dev/null
+++ b/src/meta/acx.c
@@ -0,0 +1,43 @@
+#include "meta.h"
+#include "../coding/coding.h"
+
+/* .acx - CRI container [Baroque (SAT), Persona 3 (PS2), THE iDOLM@STER: Live For You (X360)] */
+VGMSTREAM* init_vgmstream_acx(STREAMFILE* sf) {
+    VGMSTREAM* vgmstream = NULL;
+    STREAMFILE* temp_sf = NULL;
+    off_t subfile_offset;
+    size_t subfile_size;
+    int total_subsongs, target_subsong = sf->stream_index;
+
+
+    /* checks */
+    if (!check_extensions(sf,"acx"))
+        goto fail;
+    if (read_u32be(0x00,sf) != 0x00000000)
+        goto fail;
+
+    /* simple container for sfx and rarely music [Burning Rangers (SAT)],
+     * mainly used until .csb was introduced */
+
+    total_subsongs = read_u32be(0x04,sf);
+    if (target_subsong == 0) target_subsong = 1;
+    if (target_subsong < 0 || target_subsong > total_subsongs || total_subsongs < 1) goto fail;
+
+    subfile_offset = read_u32be(0x08 + (target_subsong-1) * 0x08 + 0x00,sf);
+    subfile_size   = read_u32be(0x08 + (target_subsong-1) * 0x08 + 0x04,sf);
+
+    temp_sf = setup_subfile_streamfile(sf, subfile_offset, subfile_size, "adx");
+    if (!temp_sf) goto fail;
+
+    vgmstream = init_vgmstream_adx(temp_sf);
+    if (!vgmstream) goto fail;
+
+    vgmstream->num_streams = total_subsongs;
+    close_streamfile(temp_sf);
+    return vgmstream;
+
+fail:
+    close_streamfile(temp_sf);
+    close_vgmstream(vgmstream);
+    return NULL;
+}
diff --git a/src/meta/meta.h b/src/meta/meta.h
index 95b37232..361d28aa 100644
--- a/src/meta/meta.h
+++ b/src/meta/meta.h
@@ -934,4 +934,6 @@ VGMSTREAM *init_vgmstream_sbk(STREAMFILE *sf);
 
 VGMSTREAM* init_vgmstream_ifs(STREAMFILE* sf);
 
+VGMSTREAM* init_vgmstream_acx(STREAMFILE* sf);
+
 #endif /*_META_H*/
diff --git a/src/vgmstream.c b/src/vgmstream.c
index dac2703c..bcf888c0 100644
--- a/src/vgmstream.c
+++ b/src/vgmstream.c
@@ -516,6 +516,7 @@ VGMSTREAM* (*init_vgmstream_functions[])(STREAMFILE* sf) = {
     init_vgmstream_dsp_wiiadpcm,
     init_vgmstream_dsp_cwac,
     init_vgmstream_ifs,
+    init_vgmstream_acx,
 
     /* lowest priority metas (should go after all metas, and TXTH should go before raw formats) */
     init_vgmstream_txth,            /* proper parsers should supersede TXTH, once added */