diff --git a/src/formats.c b/src/formats.c
index 5da7f61b..574a6ae6 100644
--- a/src/formats.c
+++ b/src/formats.c
@@ -92,6 +92,7 @@ static const char* extension_list[] = {
     "ckd",
     "cnk",
     "cps",
+    "cvs",
     "cxs",
 
     "da",
diff --git a/src/meta/ps2_mib.c b/src/meta/ps2_mib.c
index 3e4fff1f..a3e0dd6e 100644
--- a/src/meta/ps2_mib.c
+++ b/src/meta/ps2_mib.c
@@ -74,7 +74,8 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
 
     /* check extension, case insensitive */
     streamFile->get_name(streamFile,filename,sizeof(filename));
-    if (strcasecmp("mib",filename_extension(filename)) && 
+    if (strcasecmp("cvs",filename_extension(filename)) &&
+        strcasecmp("mib",filename_extension(filename)) && 
 		strcasecmp("mi4",filename_extension(filename)) && 
 		strcasecmp("vb",filename_extension(filename))  &&
 		strcasecmp("xag",filename_extension(filename))) goto fail;
@@ -268,7 +269,8 @@ VGMSTREAM * init_vgmstream_ps2_mib(STREAMFILE *streamFile) {
 			vgmstream->sample_rate = 44100;
 		}
 
-		if(!strcasecmp("vb",filename_extension(filename))) 
+		if (!strcasecmp("cvs", filename_extension(filename)) ||
+            !strcasecmp("vb",filename_extension(filename))) 
 		{
 			vgmstream->layout_type = layout_none;
 			vgmstream->interleave_block_size=0;
diff --git a/src/meta/ps2_xa2_rrp.c b/src/meta/ps2_xa2_rrp.c
index 2eff2f3a..64091d17 100644
--- a/src/meta/ps2_xa2_rrp.c
+++ b/src/meta/ps2_xa2_rrp.c
@@ -15,7 +15,7 @@ VGMSTREAM * init_vgmstream_ps2_xa2_rrp(STREAMFILE *streamFile) {
     if (strcasecmp("xa2",filename_extension(filename))) goto fail;
 
     /* check header */
-    if (read_32bitBE(0xC,streamFile) != 0x00000000)
+    if (read_32bitBE(0x50,streamFile) != 0x00000000)
         goto fail;
 
     loop_flag = 0;
@@ -32,6 +32,9 @@ VGMSTREAM * init_vgmstream_ps2_xa2_rrp(STREAMFILE *streamFile) {
     vgmstream->coding_type = coding_PSX;
     vgmstream->num_samples = (get_streamfile_size(streamFile)-0x800)*28/16/channel_count;
     vgmstream->layout_type = layout_interleave;
+    if (channel_count > 2)
+        vgmstream->interleave_block_size = 0x400;
+    else
     vgmstream->interleave_block_size = 0x1000;
     vgmstream->meta_type = meta_PS2_XA2_RRP;