diff --git a/src/meta/aifc.c b/src/meta/aifc.c
index 4c61c3c0..daf2663c 100644
--- a/src/meta/aifc.c
+++ b/src/meta/aifc.c
@@ -2,7 +2,7 @@
 #include "../layout/layout.h"
 
 
-/* for reading integers inexplicably packed into 80 bit floats */
+/* for reading integers inexplicably packed into 80-bit ('double extended') floats */
 static uint32_t read80bitSANE(off_t offset, STREAMFILE *streamFile) {
     uint8_t buf[10];
     int32_t exponent;
@@ -286,10 +286,6 @@ VGMSTREAM * init_vgmstream_aifc(STREAMFILE *streamFile) {
 
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_xa_aiff)
-        block_update_xa_aiff(start_offset,vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/awc.c b/src/meta/awc.c
index 2990c772..451ac67a 100644
--- a/src/meta/awc.c
+++ b/src/meta/awc.c
@@ -156,13 +156,8 @@ VGMSTREAM * init_vgmstream_awc(STREAMFILE *streamFile) {
     }
 
 
-    /* open files; channel offsets are updated below */
     if (!vgmstream_open_stream(vgmstream,streamFile,awc.stream_offset))
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_awc)
-        block_update_awc(awc.stream_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/caf.c b/src/meta/caf.c
index 8180fe8e..ca1b1134 100644
--- a/src/meta/caf.c
+++ b/src/meta/caf.c
@@ -54,9 +54,6 @@ VGMSTREAM * init_vgmstream_caf(STREAMFILE *streamFile) {
 
     if ( !vgmstream_open_stream(vgmstream,streamFile,start_offset) )
         goto fail;
-
-    block_update_caf(start_offset,vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/dec.c b/src/meta/dec.c
index 43a3fe18..69247e15 100644
--- a/src/meta/dec.c
+++ b/src/meta/dec.c
@@ -13,14 +13,16 @@ VGMSTREAM * init_vgmstream_dec(STREAMFILE *streamFile) {
     int loop_flag, channel_count, sample_rate, loop_start = 0, loop_end = 0;
 
 
-    /* check extension (.dec: main, .de2: Gurumin) */
+    /* checks
+     * .dec: main,
+     * .de2: Gurumin (PC) */
     if ( !check_extensions(streamFile,"dec,de2") )
         goto fail;
 
     /* Gurumin has extra data, maybe related to rhythm (~0x50000) */
     if (check_extensions(streamFile,"de2")) {
         /* still not sure what this is for, but consistently 0xb */
-        if (read_32bitLE(0x04,streamFile) != 0xb) goto fail;
+        if (read_32bitLE(0x04,streamFile) != 0x0b) goto fail;
 
         /* legitimate! really! */
         riff_off = 0x10 + (read_32bitLE(0x0c,streamFile) ^ read_32bitLE(0x04,streamFile));
@@ -67,6 +69,7 @@ VGMSTREAM * init_vgmstream_dec(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_DEC;
     vgmstream->sample_rate = sample_rate;
     vgmstream->num_samples = pcm_size / 2 / channel_count;
     vgmstream->loop_start_sample = loop_start;
@@ -76,14 +79,8 @@ VGMSTREAM * init_vgmstream_dec(STREAMFILE *streamFile) {
     vgmstream->interleave_block_size = 0x800;
     vgmstream->layout_type = layout_blocked_dec;
 
-    vgmstream->meta_type = meta_DEC;
-
-    /* open the file for reading */
     if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
         goto fail;
-
-    block_update_dec(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ea_1snh.c b/src/meta/ea_1snh.c
index ff204b9d..b7b4881d 100644
--- a/src/meta/ea_1snh.c
+++ b/src/meta/ea_1snh.c
@@ -97,12 +97,9 @@ VGMSTREAM * init_vgmstream_ea_1snh(STREAMFILE *streamFile) {
             goto fail;
     }
 
-    /* open files; channel offsets are updated below */
+
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-
-    block_update_ea_1snh(start_offset,vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ea_eaac.c b/src/meta/ea_eaac.c
index 34f2a998..9f8604c4 100644
--- a/src/meta/ea_eaac.c
+++ b/src/meta/ea_eaac.c
@@ -676,10 +676,6 @@ static VGMSTREAM * init_vgmstream_eaaudiocore_header(STREAMFILE * streamHead, ST
 
     if (!vgmstream_open_stream(vgmstream,temp_streamFile ? temp_streamFile : streamData,start_offset))
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_ea_sns)
-        block_update_ea_sns(start_offset, vgmstream);
-
     close_streamfile(temp_streamFile);
     return vgmstream;
 
diff --git a/src/meta/ea_schl_fixed.c b/src/meta/ea_schl_fixed.c
index 1703c0ad..c374f874 100644
--- a/src/meta/ea_schl_fixed.c
+++ b/src/meta/ea_schl_fixed.c
@@ -75,14 +75,8 @@ VGMSTREAM * init_vgmstream_ea_schl_fixed(STREAMFILE *streamFile) {
     }
 
 
-    /* open files; channel offsets are updated below */
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-
-    /* setup first block to update offsets */
-    block_update_ea_schl(start_offset,vgmstream);
-
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ea_swvr.c b/src/meta/ea_swvr.c
index 7321d253..55ed54d3 100644
--- a/src/meta/ea_swvr.c
+++ b/src/meta/ea_swvr.c
@@ -61,7 +61,7 @@ VGMSTREAM * init_vgmstream_ea_swvr(STREAMFILE *streamFile) {
     total_subsongs = 1;
     block_id = read_32bit(start_offset, streamFile);
 
-    /* files are basically headerless so we inspect blocks the first block
+    /* files are basically headerless so we inspect the first block
      * Freekstyle uses multiblocks/subsongs (though some subsongs may be clones?) */
     switch(block_id) {
         case 0x5641474D: /* "VAGM" */
@@ -121,12 +121,12 @@ VGMSTREAM * init_vgmstream_ea_swvr(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_EA_SWVR;
     vgmstream->sample_rate = sample_rate;
     vgmstream->codec_endian = big_endian;
     vgmstream->num_streams = total_subsongs;
     vgmstream->stream_size = get_streamfile_size(streamFile) / total_subsongs; /* approx... */
 
-    vgmstream->meta_type = meta_EA_SWVR;
     vgmstream->coding_type = coding;
     vgmstream->layout_type = layout_blocked_ea_swvr;
     /* DSP coefs are loaded per block */
@@ -141,7 +141,7 @@ VGMSTREAM * init_vgmstream_ea_swvr(STREAMFILE *streamFile) {
         vgmstream->stream_index = target_subsong; /* needed to skip other subsong-blocks */
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_ea_swvr(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             switch(vgmstream->coding_type) {
                 case coding_PSX:     	num_samples = ps_bytes_to_samples(vgmstream->current_block_size,1); break;
                 case coding_NGC_DSP: 	num_samples = dsp_bytes_to_samples(vgmstream->current_block_size,1); break;
@@ -151,6 +151,7 @@ VGMSTREAM * init_vgmstream_ea_swvr(STREAMFILE *streamFile) {
             vgmstream->num_samples += num_samples;
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
     if (loop_flag) {
@@ -158,7 +159,6 @@ VGMSTREAM * init_vgmstream_ea_swvr(STREAMFILE *streamFile) {
         vgmstream->loop_end_sample = vgmstream->num_samples;
     }
 
-    block_update_ea_swvr(start_offset, vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/ea_wve_ad10.c b/src/meta/ea_wve_ad10.c
index 494a6b46..53a2a6ac 100644
--- a/src/meta/ea_wve_ad10.c
+++ b/src/meta/ea_wve_ad10.c
@@ -39,14 +39,13 @@ VGMSTREAM * init_vgmstream_ea_wve_ad10(STREAMFILE *streamFile) {
     {
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_ea_wve_ad10(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_ea_wve_ad10(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ea_wve_au00.c b/src/meta/ea_wve_au00.c
index a4aea7a4..72d32849 100644
--- a/src/meta/ea_wve_au00.c
+++ b/src/meta/ea_wve_au00.c
@@ -28,8 +28,8 @@ VGMSTREAM * init_vgmstream_ea_wve_au00(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count, loop_flag);
     if (!vgmstream) goto fail;
 
-    vgmstream->sample_rate = 22050;
     vgmstream->meta_type = meta_EA_WVE_AU00;
+    vgmstream->sample_rate = 22050;
 
     /* You'd think they'd use coding_EA_XA_int but instead it's PS-ADPCM without flags and 0x0f frame size
      * (equivalent to configurable PS-ADPCM), surely to shoehorn EA-XA sizes into the PS1 hardware decoder */
@@ -44,13 +44,13 @@ VGMSTREAM * init_vgmstream_ea_wve_au00(STREAMFILE *streamFile) {
     {
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_ea_wve_au00(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             vgmstream->num_samples += ps_cfg_bytes_to_samples(vgmstream->current_block_size, vgmstream->interleave_block_size, 1);
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_ea_wve_au00(start_offset, vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/gsp_gsb.c b/src/meta/gsp_gsb.c
index d51ec240..4163db82 100644
--- a/src/meta/gsp_gsb.c
+++ b/src/meta/gsp_gsb.c
@@ -2,10 +2,10 @@
 #include "../layout/layout.h"
 #include "../coding/coding.h"
 
-/* GSP+GSB - from Tecmo's Super Swing Golf 1 & 2 (WII), Quantum Theory (PS3/X360) */
+/* GSP+GSB - from Tecmo's Super Swing Golf 1 & 2 (Wii), Quantum Theory (PS3/X360) */
 VGMSTREAM * init_vgmstream_gsp_gsb(STREAMFILE *streamFile) {
     VGMSTREAM * vgmstream = NULL;
-    STREAMFILE * streamFileGSP = NULL;
+    STREAMFILE * streamHeader = NULL;
     int loop_flag, channel_count;
     off_t start_offset, chunk_offset, first_offset;
     size_t datasize;
@@ -16,68 +16,70 @@ VGMSTREAM * init_vgmstream_gsp_gsb(STREAMFILE *streamFile) {
     if (!check_extensions(streamFile,"gsb"))
         goto fail;
 
-    streamFileGSP = open_streamfile_by_ext(streamFile, "gsp");
-    if (!streamFileGSP) goto fail;
+    streamHeader = open_streamfile_by_ext(streamFile, "gsp");
+    if (!streamHeader) goto fail;
 
     /* check header */
-    if (read_32bitBE(0x00,streamFileGSP) != 0x47534E44)	/* "GSND" */
+    if (read_32bitBE(0x00,streamHeader) != 0x47534E44)	/* "GSND" */
         goto fail;
     /*  0x04: version?,  0x08: 1?,  0x0c: 0?,  */
-    first_offset = read_32bitBE(0x10,streamFileGSP); /* usually 0x14*/
+    first_offset = read_32bitBE(0x10,streamHeader); /* usually 0x14*/
+
+    if (!find_chunk_be(streamHeader, 0x44415441,first_offset,1, &chunk_offset,NULL)) goto fail; /*"DATA"*/
+    channel_count = read_16bitBE(chunk_offset+0x0e,streamHeader);
+    if (!find_chunk_be(streamHeader, 0x42534943,first_offset,1, &chunk_offset,NULL)) goto fail; /*"BSIC"*/
+    loop_flag = read_8bit(chunk_offset+0x0c,streamHeader);
+
+    start_offset = 0x00;
 
-    if (!find_chunk_be(streamFileGSP, 0x44415441,first_offset,1, &chunk_offset,NULL)) goto fail; /*"DATA"*/
-    channel_count = read_16bitBE(chunk_offset+0x0e,streamFileGSP);
-    if (!find_chunk_be(streamFileGSP, 0x42534943,first_offset,1, &chunk_offset,NULL)) goto fail; /*"BSIC"*/
-    loop_flag = read_8bit(chunk_offset+0x0c,streamFileGSP);
 
     /* build the VGMSTREAM */
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_GSP_GSB;
 
-    if (!find_chunk_be(streamFileGSP, 0x48454144,first_offset,1, &chunk_offset,NULL)) goto fail; /*"HEAD"*/
+
+    if (!find_chunk_be(streamHeader, 0x48454144,first_offset,1, &chunk_offset,NULL)) goto fail; /*"HEAD"*/
     /*  0x00: header_size,  0x04: num_chunks */
 
-    if (!find_chunk_be(streamFileGSP, 0x44415441,first_offset,1, &chunk_offset,NULL)) goto fail; /*"DATA"*/
+    if (!find_chunk_be(streamHeader, 0x44415441,first_offset,1, &chunk_offset,NULL)) goto fail; /*"DATA"*/
     /*  0x00: filesize,  0x0c: always 10?,  0x10: always 0?,  0x18: always 0? */
-    datasize = read_32bitBE(chunk_offset+0x00,streamFileGSP);
-    codec_id = read_32bitBE(chunk_offset+0x04,streamFileGSP);
-    vgmstream->sample_rate = read_32bitBE(chunk_offset+0x08,streamFileGSP);
-    vgmstream->channels = channel_count; /* 0x0e */
-    vgmstream->num_samples = read_32bitBE(chunk_offset+0x14,streamFileGSP);
+    datasize = read_32bitBE(chunk_offset+0x00,streamHeader);
+    codec_id = read_32bitBE(chunk_offset+0x04,streamHeader);
+    vgmstream->sample_rate = read_32bitBE(chunk_offset+0x08,streamHeader);
+    vgmstream->num_samples = read_32bitBE(chunk_offset+0x14,streamHeader);
     /*  0x1c: unk (varies with codec_id) */
 
-    if (!find_chunk_be(streamFileGSP, 0x42534943,first_offset,1, &chunk_offset,NULL)) goto fail; /*"BSIC"*/
+    if (!find_chunk_be(streamHeader, 0x42534943,first_offset,1, &chunk_offset,NULL)) goto fail; /*"BSIC"*/
     /*  0x00+: probably volume/pan/etc */
-    vgmstream->loop_start_sample = read_32bitBE(chunk_offset+0x10,streamFileGSP);
-    vgmstream->loop_end_sample = read_32bitBE(chunk_offset+0x14,streamFileGSP);
+    vgmstream->loop_start_sample = read_32bitBE(chunk_offset+0x10,streamHeader);
+    vgmstream->loop_end_sample = read_32bitBE(chunk_offset+0x14,streamHeader);
 
-    //if (!find_chunk_be(streamFileGSP, 0x4E414D45,first_offset,1, &chunk_offset,NULL)) goto fail; /*"NAME"*/
+    //if (!find_chunk_be(streamHeader, 0x4E414D45,first_offset,1, &chunk_offset,NULL)) goto fail; /*"NAME"*/
     /* 0x00: name_size, 0x04+: name*/
 
-    start_offset = 0x0;
-
     switch (codec_id) {
-        case 4: { /* DSP */
+        case 0x04: { /* DSP [Super Swing Golf (Wii)] */
             size_t block_header_size;
             size_t num_blocks;
 
             vgmstream->coding_type = coding_NGC_DSP;
             vgmstream->layout_type = layout_blocked_gsb;
 
-            if (!find_chunk_be(streamFileGSP, 0x47434558,first_offset,1, &chunk_offset,NULL)) goto fail; /*"GCEX"*/
+            if (!find_chunk_be(streamHeader, 0x47434558,first_offset,1, &chunk_offset,NULL)) goto fail; /*"GCEX"*/
 
-            //vgmstream->current_block_size = read_32bitBE(chunk_offset+0x00,streamFileGSP);
-            block_header_size = read_32bitBE(chunk_offset+0x04,streamFileGSP);
-            num_blocks = read_32bitBE(chunk_offset+0x08,streamFileGSP);
+            //vgmstream->current_block_size = read_32bitBE(chunk_offset+0x00,streamHeader);
+            block_header_size = read_32bitBE(chunk_offset+0x04,streamHeader);
+            num_blocks = read_32bitBE(chunk_offset+0x08,streamHeader);
             vgmstream->num_samples = (datasize - block_header_size * num_blocks) / 8 / vgmstream->channels * 14;
             /* 0x0c+: unk */
 
-            dsp_read_coefs_be(vgmstream, streamFileGSP, chunk_offset+0x18, 0x30);
+            dsp_read_coefs_be(vgmstream, streamHeader, chunk_offset+0x18, 0x30);
             break;
         }
 #ifdef VGM_USE_FFMPEG
-        case 8: { /* ATRAC3 */
+        case 0x08: { /* ATRAC3 [Quantum Theory (PS3)] */
             ffmpeg_codec_data *ffmpeg_data = NULL;
             uint8_t buf[100];
             int32_t bytes, block_size, encoder_delay, joint_stereo, max_samples;
@@ -105,15 +107,15 @@ VGMSTREAM * init_vgmstream_gsp_gsb(STREAMFILE *streamFile) {
             break;
         }
 
-        case 9: { /* XMA2 */
+        case 0x09: { /* XMA2 [Quantum Theory (PS3)] */
             ffmpeg_codec_data *ffmpeg_data = NULL;
             uint8_t buf[200];
             int32_t bytes;
 
-            if (!find_chunk_be(streamFileGSP, 0x584D4558,first_offset,1, &chunk_offset,NULL)) goto fail; /*"XMEX"*/
+            if (!find_chunk_be(streamHeader, 0x584D4558,first_offset,1, &chunk_offset,NULL)) goto fail; /*"XMEX"*/
             /* 0x00: fmt0x166 header (BE),  0x34: seek table */
 
-            bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,200, chunk_offset,0x34, datasize, streamFileGSP, 1);
+            bytes = ffmpeg_make_riff_xma_from_fmt_chunk(buf,200, chunk_offset,0x34, datasize, streamHeader, 1);
             if (bytes <= 0) goto fail;
 
             ffmpeg_data = init_ffmpeg_header_offset(streamFile, buf,bytes, start_offset,datasize);
@@ -128,18 +130,15 @@ VGMSTREAM * init_vgmstream_gsp_gsb(STREAMFILE *streamFile) {
         default:
             goto fail;
     }
-    vgmstream->meta_type = meta_GSP_GSB;
 
 
-    /* open the file for reading */
     if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
         goto fail;
-
-    close_streamfile(streamFileGSP);
+    close_streamfile(streamHeader);
     return vgmstream;
 
 fail:
-    if (streamFileGSP) close_streamfile(streamFileGSP);
+    close_streamfile(streamHeader);
     close_vgmstream(vgmstream);
     return NULL;
 }
diff --git a/src/meta/h4m.c b/src/meta/h4m.c
index d01f21ba..80540977 100644
--- a/src/meta/h4m.c
+++ b/src/meta/h4m.c
@@ -89,17 +89,18 @@ VGMSTREAM * init_vgmstream_h4m(STREAMFILE *streamFile) {
 
     /* calc num_samples manually */
     {
+        vgmstream->stream_index = target_subsong; /* extra setup for H4M */
+        vgmstream->full_block_size = 0; /* extra setup for H4M */
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_h4m(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             vgmstream->num_samples += vgmstream->current_block_samples;
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
         vgmstream->full_block_size = 0; /* extra cleanup for H4M */
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_h4m(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ivaud.c b/src/meta/ivaud.c
index 96efa670..8a85a556 100644
--- a/src/meta/ivaud.c
+++ b/src/meta/ivaud.c
@@ -73,10 +73,6 @@ VGMSTREAM * init_vgmstream_ivaud(STREAMFILE *streamFile) {
 
     if (!vgmstream_open_stream(vgmstream,streamFile,ivaud.stream_offset))
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_ivaud)
-        block_update_ivaud(ivaud.stream_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/nds_hwas.c b/src/meta/nds_hwas.c
index 37d78ff2..963a8c74 100644
--- a/src/meta/nds_hwas.c
+++ b/src/meta/nds_hwas.c
@@ -12,8 +12,6 @@ VGMSTREAM * init_vgmstream_nds_hwas(STREAMFILE *streamFile) {
     /* .hwas: usually in archives but also found named (ex. Guitar Hero On Tour) */
     if (!check_extensions(streamFile,"hwas"))
         goto fail;
-
-    /* check header */
     if (read_32bitBE(0x00,streamFile) != 0x73617768) /* "sawh" */
         goto fail;
 
@@ -27,23 +25,18 @@ VGMSTREAM * init_vgmstream_nds_hwas(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_NDS_HWAS;
     vgmstream->sample_rate = read_32bitLE(0x08,streamFile);
     vgmstream->num_samples = ima_bytes_to_samples(read_32bitLE(0x14,streamFile), channel_count);
     vgmstream->loop_start_sample = ima_bytes_to_samples(read_32bitLE(0x10,streamFile), channel_count); //assumed, always 0
     vgmstream->loop_end_sample = ima_bytes_to_samples(read_32bitLE(0x18,streamFile), channel_count);
 
-    vgmstream->meta_type = meta_NDS_HWAS;
-
     vgmstream->coding_type = coding_IMA_int;
     vgmstream->layout_type = layout_blocked_hwas;
     vgmstream->full_block_size = read_32bitLE(0x04,streamFile); /* usually 0x2000, 0x4000 or 0x8000 */
 
-    /* open the file for reading by each channel */
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-
-    block_update_hwas(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/ps2_adm.c b/src/meta/ps2_adm.c
index b1c6d3db..b0c5b61c 100644
--- a/src/meta/ps2_adm.c
+++ b/src/meta/ps2_adm.c
@@ -32,8 +32,8 @@ VGMSTREAM * init_vgmstream_ps2_adm(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
-    vgmstream->sample_rate = 44100;
     vgmstream->meta_type = meta_PS2_ADM;
+    vgmstream->sample_rate = 44100;
     vgmstream->coding_type = coding_PSX;
     vgmstream->layout_type = layout_blocked_adm;
 
@@ -44,19 +44,18 @@ VGMSTREAM * init_vgmstream_ps2_adm(STREAMFILE *streamFile) {
     {
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_adm(vgmstream->next_block_offset,vgmstream);
-
+            block_update(vgmstream->next_block_offset,vgmstream);
             if (loop_flag && vgmstream->current_block_offset == loop_start_offset)
                 vgmstream->loop_start_sample = vgmstream->num_samples;
             vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset,vgmstream);
 
         if (loop_flag)
             vgmstream->loop_end_sample = vgmstream->num_samples;
     }
 
-    block_update_adm(start_offset,vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/ps2_iab.c b/src/meta/ps2_iab.c
index 593cb4f8..edae3d81 100644
--- a/src/meta/ps2_iab.c
+++ b/src/meta/ps2_iab.c
@@ -40,13 +40,13 @@ VGMSTREAM * init_vgmstream_ps2_iab(STREAMFILE *streamFile) {
     {
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_ps2_iab(vgmstream->next_block_offset, vgmstream);
+            block_update(vgmstream->next_block_offset, vgmstream);
             vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_ps2_iab(start_offset, vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/ps2_strlr.c b/src/meta/ps2_strlr.c
index 9e8a42c6..83770fc4 100644
--- a/src/meta/ps2_strlr.c
+++ b/src/meta/ps2_strlr.c
@@ -2,7 +2,7 @@
 #include "../layout/layout.h"
 #include "../coding/coding.h"
 
-/* STR - The Bouncer (PS2) */
+/* .vs/STRx - from The Bouncer (PS2) */
 VGMSTREAM * init_vgmstream_ps2_strlr(STREAMFILE *streamFile) {
     VGMSTREAM * vgmstream = NULL;
     int channel_count, loop_flag;
@@ -10,11 +10,11 @@ VGMSTREAM * init_vgmstream_ps2_strlr(STREAMFILE *streamFile) {
 
 
     /* checks */
-    /* .vs: real extension (from .nam container) , .str: partial header id */
+    /* .vs: real extension (from .nam container)
+     * .str: fake, partial header id */
     if (!check_extensions(streamFile, "vs,str"))
         goto fail;
 
-    /* check header */
     if (!(read_32bitBE(0x000,streamFile) == 0x5354524C &&   /* "STRL" */
           read_32bitBE(0x800,streamFile) == 0x53545252) &&  /* "STRR" */
         read_32bitBE(0x00,streamFile) != 0x5354524D)        /* "STRM" */
@@ -29,11 +29,10 @@ VGMSTREAM * init_vgmstream_ps2_strlr(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_PS2_STRLR;
     vgmstream->sample_rate = 44100;
     vgmstream->coding_type = coding_PSX;
-
     vgmstream->layout_type = layout_blocked_ps2_strlr;
-    vgmstream->meta_type = meta_PS2_STRLR;
 
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
@@ -42,13 +41,13 @@ VGMSTREAM * init_vgmstream_ps2_strlr(STREAMFILE *streamFile) {
     {
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_ps2_strlr(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             vgmstream->num_samples += ps_bytes_to_samples(vgmstream->current_block_size, 1);
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_ps2_strlr(start_offset, vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/psx_cdxa.c b/src/meta/psx_cdxa.c
index fab4911a..612b5adf 100644
--- a/src/meta/psx_cdxa.c
+++ b/src/meta/psx_cdxa.c
@@ -158,18 +158,16 @@ VGMSTREAM * init_vgmstream_cdxa(STREAMFILE *streamFile) {
         /* calc num_samples as blocks may be empty or smaller than usual depending on flags */
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_xa(vgmstream->next_block_offset,vgmstream);
+            block_update(vgmstream->next_block_offset,vgmstream);
             vgmstream->num_samples += vgmstream->current_block_samples;
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
-
+        block_update(start_offset,vgmstream);
     }
     else {
         vgmstream->num_samples = xa_bytes_to_samples(file_size - start_offset, channel_count, is_blocked);
     }
 
-    if (vgmstream->layout_type == layout_blocked_xa)
-        block_update_xa(start_offset,vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/rws.c b/src/meta/rws.c
index eff42048..563a7058 100644
--- a/src/meta/rws.c
+++ b/src/meta/rws.c
@@ -242,10 +242,10 @@ VGMSTREAM * init_vgmstream_rws(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(rws.channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_RWS;
     vgmstream->sample_rate = rws.sample_rate;
     vgmstream->num_streams = total_subsongs;
     vgmstream->stream_size = stream_size;
-    vgmstream->meta_type = meta_RWS;
     if (name_offset)
         read_string(vgmstream->stream_name,STREAM_NAME_SIZE, name_offset,streamFile);
 
@@ -300,9 +300,6 @@ VGMSTREAM * init_vgmstream_rws(STREAMFILE *streamFile) {
 
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-
-    block_update_rws(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/sthd.c b/src/meta/sthd.c
index 9c83a013..5c025df6 100644
--- a/src/meta/sthd.c
+++ b/src/meta/sthd.c
@@ -28,8 +28,9 @@ VGMSTREAM * init_vgmstream_sthd(STREAMFILE *streamFile) {
     vgmstream = allocate_vgmstream(channel_count, loop_flag);
     if (!vgmstream) goto fail;
 
-    vgmstream->sample_rate = read_32bitLE(0x20, streamFile); /* repeated ~8 times? */
     vgmstream->meta_type = meta_STHD;
+    vgmstream->sample_rate = read_32bitLE(0x20, streamFile); /* repeated ~8 times? */
+
     vgmstream->coding_type = coding_XBOX_IMA_int;
     vgmstream->layout_type = layout_blocked_sthd;
 
@@ -45,8 +46,7 @@ VGMSTREAM * init_vgmstream_sthd(STREAMFILE *streamFile) {
 
         vgmstream->next_block_offset = start_offset;
         do {
-            block_update_sthd(vgmstream->next_block_offset,vgmstream);
-
+            block_update(vgmstream->next_block_offset,vgmstream);
             if (block_count == loop_start_block)
                 vgmstream->loop_start_sample = vgmstream->num_samples;
             if (block_count == loop_end_block)
@@ -56,10 +56,9 @@ VGMSTREAM * init_vgmstream_sthd(STREAMFILE *streamFile) {
             block_count++;
         }
         while (vgmstream->next_block_offset < get_streamfile_size(streamFile));
+        block_update(start_offset, vgmstream);
     }
 
-    block_update_sthd(start_offset, vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/vawx.c b/src/meta/vawx.c
index 32d89332..02a689ca 100644
--- a/src/meta/vawx.c
+++ b/src/meta/vawx.c
@@ -103,10 +103,6 @@ VGMSTREAM * init_vgmstream_vawx(STREAMFILE *streamFile) {
 
     if ( !vgmstream_open_stream(vgmstream, streamFile, start_offset) )
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_vawx)
-        block_update_vawx(start_offset,vgmstream);
-
     return vgmstream;
 
 fail:
diff --git a/src/meta/vgs.c b/src/meta/vgs.c
index ba2e66de..db55f8fb 100644
--- a/src/meta/vgs.c
+++ b/src/meta/vgs.c
@@ -50,25 +50,22 @@ VGMSTREAM * init_vgmstream_vgs(STREAMFILE *streamFile) {
         channel_count++;
     }
 
+    start_offset = 0x80;
+
     
 	/* build the VGMSTREAM */
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
-    start_offset = 0x80;
+    vgmstream->meta_type = meta_VGS;
     vgmstream->sample_rate = sample_rate;
     vgmstream->num_samples = ps_bytes_to_samples(channel_size*channel_count, channel_count);
 
     vgmstream->coding_type = coding_PSX_badflags; /* flag = stream/channel number */
     vgmstream->layout_type = layout_blocked_vgs;
-    vgmstream->meta_type = meta_VGS;
 
-
-    /* open files; channel offsets are updated below */
     if (!vgmstream_open_stream(vgmstream,streamFile,start_offset))
         goto fail;
-    block_update_vgs(start_offset, vgmstream);
-
     return vgmstream;
 fail:
     close_vgmstream(vgmstream);
diff --git a/src/meta/xbox_xvas.c b/src/meta/xbox_xvas.c
index 6ee37b86..acd09c8b 100644
--- a/src/meta/xbox_xvas.c
+++ b/src/meta/xbox_xvas.c
@@ -9,10 +9,10 @@ VGMSTREAM * init_vgmstream_xbox_xvas(STREAMFILE *streamFile) {
     int loop_flag, channel_count;
     size_t data_size;
 
-    /* check extension */
+
+    /* checks */
     if (!check_extensions(streamFile,"xvas"))
         goto fail;
-
     if (read_32bitLE(0x00,streamFile) != 0x69 && /* codec */
         read_32bitLE(0x08,streamFile) != 0x48)   /* block size (probably 0x24 for mono) */
         goto fail;
@@ -23,10 +23,12 @@ VGMSTREAM * init_vgmstream_xbox_xvas(STREAMFILE *streamFile) {
     data_size = read_32bitLE(0x24,streamFile);
     data_size -= (data_size / 0x20000) * 0x20; /* blocks of 0x20000 with padding */
 
+
     /* build the VGMSTREAM */
     vgmstream = allocate_vgmstream(channel_count,loop_flag);
     if (!vgmstream) goto fail;
 
+    vgmstream->meta_type = meta_XBOX_XVAS;
     vgmstream->sample_rate = read_32bitLE(0x0c,streamFile);
     vgmstream->num_samples = xbox_ima_bytes_to_samples(data_size, vgmstream->channels);
     if(loop_flag) {
@@ -38,12 +40,9 @@ VGMSTREAM * init_vgmstream_xbox_xvas(STREAMFILE *streamFile) {
 
     vgmstream->coding_type = coding_XBOX_IMA;
     vgmstream->layout_type = layout_blocked_xvas;
-    vgmstream->meta_type = meta_XBOX_XVAS;
 
     if (!vgmstream_open_stream(vgmstream, streamFile, start_offset))
         goto fail;
-
-    block_update_xvas(start_offset,vgmstream);
     return vgmstream;
 
 fail:
diff --git a/src/meta/xvag.c b/src/meta/xvag.c
index 8847d046..27614b61 100644
--- a/src/meta/xvag.c
+++ b/src/meta/xvag.c
@@ -207,13 +207,8 @@ VGMSTREAM * init_vgmstream_xvag(STREAMFILE *streamFile) {
     }
 
 
-    /* open the file for reading */
     if (!vgmstream_open_stream(vgmstream,temp_streamFile ? temp_streamFile : streamFile,start_offset))
         goto fail;
-
-    if (vgmstream->layout_type == layout_blocked_xvag_subsong)
-        block_update_xvag_subsong(start_offset, vgmstream);
-
     close_streamfile(temp_streamFile);
     return vgmstream;