diff --git a/src/Makefile b/src/Makefile
index a7f08a26..d4f3f3ff 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -96,9 +96,10 @@ META_OBJS=meta/adx_header.o \
     meta/dc_kcey.o \
     meta/ps2_rstm.o \
     meta/acm.o \
-		meta/ps2_kces.o \
-		meta/ps2_dxh.o \
-		meta/ps2_psh.o
+    meta/mus_acm.o \
+    meta/ps2_kces.o \
+    meta/ps2_dxh.o \
+    meta/ps2_psh.o
 		
 OBJECTS=vgmstream.o streamfile.o util.o $(CODING_OBJS) $(LAYOUT_OBJS) $(META_OBJS)
 
diff --git a/src/layout/mus_acm.c b/src/layout/mus_acm.c
index 8e414dee..6e13519c 100644
--- a/src/layout/mus_acm.c
+++ b/src/layout/mus_acm.c
@@ -12,31 +12,31 @@ void render_vgmstream_mus_acm(sample * buffer, int32_t sample_count, VGMSTREAM *
         int samples_to_do;
         int samples_this_block = acm->total_values / acm->info.channels;
 
-#if 0
         if (vgmstream->loop_flag && vgmstream_do_loop(vgmstream)) {
+            data->current_file = data->loop_start_file;
+            acm_reset(data->files[data->current_file]);
+            vgmstream->samples_into_block = 0;
             continue;
         }
-#endif
 
         samples_to_do = vgmstream_samples_to_do(samples_this_block, 1, vgmstream);
 
+        /*printf("samples_to_do=%d,samples_this_block=%d,samples_written=%d,sample_count=%d\n",samples_to_do,samples_this_block,samples_written,sample_count);*/
+
         if (samples_written+samples_to_do > sample_count)
             samples_to_do=sample_count-samples_written;
 
         if (samples_to_do == 0)
         {
             data->current_file++;
+            /*printf("next %d, %d samples\n",data->current_file,data->files[data->current_file]->total_values/data->files[data->current_file]->info.channels);*/
             /* check for loop */
-            if (vgmstream->loop_flag) {
-                if (data->current_file == data->loop_end_file)
-                    data->current_file = data->loop_start_file;
-            } else {
-                /* */
-            }
             acm_reset(data->files[data->current_file]);
+            vgmstream->samples_into_block = 0;
             continue;
         }
 
+        /*printf("decode %d samples file %d\n",samples_to_do,data->current_file);*/
         decode_acm(acm,
                 buffer+samples_written*vgmstream->channels,
                 samples_to_do, vgmstream->channels);
diff --git a/src/libvgmstream.vcproj b/src/libvgmstream.vcproj
index c0a8220c..4a3c30ef 100644
--- a/src/libvgmstream.vcproj
+++ b/src/libvgmstream.vcproj
@@ -262,6 +262,10 @@
 					RelativePath=".\meta\ivb.c"
 					>
 				</File>
+				<File
+					RelativePath=".\meta\mus_acm.c"
+					>
+				</File>
 				<File
 					RelativePath=".\meta\musc.c"
 					>
diff --git a/src/meta/Makefile.unix.am b/src/meta/Makefile.unix.am
index 3e15f175..5bca9dd0 100644
--- a/src/meta/Makefile.unix.am
+++ b/src/meta/Makefile.unix.am
@@ -75,5 +75,6 @@ libmeta_la_SOURCES += acm.c
 libmeta_la_SOURCES += ps2_kces.c
 libmeta_la_SOURCES += ps2_dxh.c
 libmeta_la_SOURCES += ps2_psh.c
+libmeta_la_SOURCES += mus_acm.c
 
 EXTRA_DIST = meta.h
diff --git a/src/meta/meta.h b/src/meta/meta.h
index 0d725343..a579b80a 100644
--- a/src/meta/meta.h
+++ b/src/meta/meta.h
@@ -163,4 +163,6 @@ VGMSTREAM * init_vgmstream_ps2_dxh(STREAMFILE * streamFile);
 
 VGMSTREAM * init_vgmstream_ps2_psh(STREAMFILE * streamFile);
 
+VGMSTREAM * init_vgmstream_mus_acm(STREAMFILE * streamFile);
+
 #endif
diff --git a/src/meta/mus_acm.c b/src/meta/mus_acm.c
new file mode 100644
index 00000000..d31598ab
--- /dev/null
+++ b/src/meta/mus_acm.c
@@ -0,0 +1,349 @@
+#include "../vgmstream.h"
+#include "meta.h"
+#include "../util.h"
+#include "../streamfile.h"
+#include "../coding/acm_decoder.h"
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+
+#ifdef WIN32
+#define DIRSEP '\\'
+#else
+#define DIRSEP '/'
+#endif
+
+#define NAME_LENGTH 260
+
+int exists(char *filename, STREAMFILE *streamfile) {
+    STREAMFILE * temp = 
+        streamfile->open(streamfile,filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
+    if (!temp) return 0;
+
+    close_streamfile(temp);
+    return 1;
+}
+
+/* needs the name of a file in the directory to test, as all we can do reliably is attempt to open a file */
+int find_directory_name(char *name_base, char *dir_name, int subdir_name_size, char *subdir_name, char *name, char *file_name, STREAMFILE *streamfile) {
+    /* find directory name */
+    {
+        char temp_dir_name[NAME_LENGTH];
+
+        subdir_name[0]='\0';
+        concatn(subdir_name_size,subdir_name,name_base);
+
+        if (strlen(subdir_name) >= subdir_name_size-2) goto fail;
+        subdir_name[strlen(subdir_name)+1]='\0';
+        subdir_name[strlen(subdir_name)]=DIRSEP;
+
+        temp_dir_name[0]='\0';
+        concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
+        concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
+        concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
+        concatn(sizeof(temp_dir_name),temp_dir_name,name);
+        concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
+
+        if (!exists(temp_dir_name,streamfile)) {
+            int i;
+            /* try all lowercase */
+            for (i=strlen(subdir_name)-1;i>=0;i--) {
+                subdir_name[i]=tolower(subdir_name[i]);
+            }
+            temp_dir_name[0]='\0';
+            concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
+            concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
+            concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
+            concatn(sizeof(temp_dir_name),temp_dir_name,name);
+            concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
+
+            if (!exists(temp_dir_name,streamfile)) {
+                /* try first uppercase */
+                subdir_name[0]=toupper(subdir_name[0]);
+                temp_dir_name[0]='\0';
+                concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
+                concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
+                concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
+                concatn(sizeof(temp_dir_name),temp_dir_name,name);
+                concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
+                if (!exists(temp_dir_name,streamfile)) {
+                    /* try also 3rd uppercase */
+                    subdir_name[2]=toupper(subdir_name[2]);
+                    temp_dir_name[0]='\0';
+                    concatn(sizeof(temp_dir_name),temp_dir_name,dir_name);
+                    concatn(sizeof(temp_dir_name),temp_dir_name,subdir_name);
+                    concatn(sizeof(temp_dir_name),temp_dir_name,name_base);
+                    concatn(sizeof(temp_dir_name),temp_dir_name,name);
+                    concatn(sizeof(temp_dir_name),temp_dir_name,".ACM");
+                    
+                    if (!exists(temp_dir_name,streamfile)) {
+                        /* ah well, disaster has befallen your party */
+                        goto fail;
+                    }
+                }
+            }
+        }
+    }
+
+    return 0;
+
+fail:
+    return 1;
+}
+
+/* MUS playlist for InterPlay ACM */
+VGMSTREAM * init_vgmstream_mus_acm(STREAMFILE *streamFile) {
+    VGMSTREAM * vgmstream = NULL;
+    ACMStream *acm_stream = NULL;
+    mus_acm_codec_data *data = NULL;
+
+    char filename[NAME_LENGTH];
+    char line_buffer[NAME_LENGTH];
+    char * end_ptr;
+    char name_base[NAME_LENGTH];
+    char (*names)[NAME_LENGTH] = NULL;
+    char dir_name[NAME_LENGTH];
+    char subdir_name[NAME_LENGTH];
+
+    int i;
+    int loop_flag = 0;
+	int channel_count;
+    int file_count;
+    size_t line_bytes;
+    int whole_line_read = 0;
+    off_t mus_offset = 0;
+
+    int loop_end_index = -1;
+    int loop_start_index = -1;
+    int32_t loop_start_samples = -1;
+    int32_t loop_end_samples = -1;
+
+    int32_t total_samples = 0;
+
+    /* check extension, case insensitive */
+    streamFile->get_name(streamFile,filename,sizeof(filename));
+    if (strcasecmp("mus",filename_extension(filename))) goto fail;
+
+    /* read file name base */
+    line_bytes = get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
+            mus_offset, streamFile, &whole_line_read);
+    if (!whole_line_read) goto fail;
+    mus_offset += line_bytes;
+    memcpy(name_base,line_buffer,sizeof(name_base));
+
+    /* uppercase name_base */
+    {
+        int i;
+        for (i=0;name_base[i];i++) name_base[i]=toupper(name_base[i]);
+    }
+
+    /*printf("name base: %s\n",name_base);*/
+
+    /* read track entry count */
+    line_bytes = get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
+            mus_offset, streamFile, &whole_line_read);
+    if (!whole_line_read) goto fail;
+    if (line_buffer[0] == '\0') goto fail;
+    mus_offset += line_bytes;
+    file_count = strtol(line_buffer,&end_ptr,10);
+    /* didn't parse whole line as an integer (optional opening whitespace) */
+    if (*end_ptr != '\0') goto fail;
+
+    /*printf("entries: %d\n",file_count);*/
+
+    names = calloc(file_count,sizeof(names[0]));
+    if (!names) goto fail;
+
+    dir_name[0]='\0';
+    concatn(sizeof(dir_name),dir_name,filename);
+
+    {
+        /* find directory name for the directory contianing the MUS */
+        char * last_slash;
+        last_slash = strrchr(dir_name,DIRSEP);
+        if (last_slash != NULL) {
+            /* trim off the file name */
+            last_slash[1]='\0';
+        } else {
+            /* no dir name? annihilate! */
+            dir_name[0] = '\0';
+        }
+    }
+
+    /* can't do this until we have a file name */
+    subdir_name[0]='\0';
+
+    /* parse each entry */
+    {
+        char name[NAME_LENGTH];
+        char loop_name_base_temp[NAME_LENGTH];
+        char loop_name_temp[NAME_LENGTH];
+        char loop_name_base[NAME_LENGTH];
+        char loop_name[NAME_LENGTH];
+        for (i=0;i<file_count;i++)
+        {
+            int fields_matched;
+            line_bytes =
+                get_streamfile_dos_line(sizeof(line_buffer),line_buffer,
+                        mus_offset, streamFile, &whole_line_read);
+            if (!whole_line_read) goto fail;
+            mus_offset += line_bytes;
+
+            fields_matched = sscanf(line_buffer,"%s %s %s",name,
+                    loop_name_base_temp,loop_name_temp);
+
+
+            if (fields_matched < 1) goto fail;
+            if (fields_matched == 3 && loop_name_base[0] != '@')
+            {
+                int j;
+                memcpy(loop_name,loop_name_temp,sizeof(loop_name));
+                memcpy(loop_name_base,loop_name_base_temp,sizeof(loop_name_base));
+                for (j=0;loop_name[j];j++) loop_name[j]=toupper(loop_name[j]);
+                for (j=0;loop_name_base[j];j++) loop_name_base[j]=toupper(loop_name_base[j]);
+                /* loop back entry */
+                loop_end_index = i;
+            }
+            else
+            {
+                /* normal entry, ignoring the @TAG for now */
+            }
+
+            {
+                /* uppercase */
+                int j;
+                for (j=0;j<strlen(name);j++) name[j]=toupper(name[j]);
+            }
+
+            /* try looking in the common directory */
+            names[i][0] = '\0';
+            concatn(sizeof(names[0]),names[i],dir_name);
+            concatn(sizeof(names[0]),names[i],name);
+            concatn(sizeof(names[0]),names[i],".ACM");
+
+            if (!exists(names[i],streamFile)) {
+
+                /* We can't test for the directory until we have a file name
+                 * to look for, so we do it here with the first file that seems to
+                 * be in a subdirectory */
+                if (subdir_name[0]=='\0') {
+                    if (find_directory_name(name_base, dir_name, sizeof(subdir_name), subdir_name, name, filename, streamFile))
+                        goto fail;
+                }
+
+                names[i][0] = '\0';
+                concatn(sizeof(names[0]),names[i],dir_name);
+                concatn(sizeof(names[0]),names[i],subdir_name);
+                concatn(sizeof(names[0]),names[i],name_base);
+                concatn(sizeof(names[0]),names[i],name);
+                concatn(sizeof(names[0]),names[i],".ACM");
+
+                if (!exists(names[i],streamFile)) goto fail;
+            }
+
+            /*printf("%2d %s\n",i,names[i]);*/
+        }
+
+        if (loop_end_index != -1) {
+            /* find the file to loop back to */
+            char target_name[NAME_LENGTH];
+            target_name[0]='\0';
+            concatn(sizeof(target_name),target_name,dir_name);
+            concatn(sizeof(target_name),target_name,subdir_name);
+            concatn(sizeof(target_name),target_name,loop_name_base);
+            concatn(sizeof(target_name),target_name,loop_name);
+            concatn(sizeof(target_name),target_name,".ACM");
+
+            for (i=0;i<file_count;i++) {
+                if (!strcmp(target_name,names[i]))
+                {
+                    loop_start_index = i;
+                    break;
+                }
+            }
+
+            if (loop_start_index != -1) {
+                /*printf("loop from %d to %d\n",loop_end_index,loop_start_index);*/
+                /*if (loop_start_index < file_count-1) loop_start_index++;*/
+                /*loop_end_index++;*/
+                loop_flag = 1;
+            }
+
+        }
+    }
+
+    /* set up the struct to track the files */
+    data = calloc(1,sizeof(mus_acm_codec_data));
+    if (!data) goto fail;
+
+    data->files = calloc(file_count,sizeof(ACMStream *));
+    if (!data->files) {
+        free(data); data = NULL;
+        goto fail;
+    }
+
+    /* open each file... */
+    for (i=0;i<file_count;i++) {
+
+        /* gonna do this a little backwards, open and parse the file
+           before creating the vgmstream */
+
+        if (acm_open_decoder(&acm_stream,streamFile,names[i]) != ACM_OK) {
+            goto fail;
+        }
+
+        data->files[i]=acm_stream;
+
+        if (i==loop_start_index) loop_start_samples = total_samples;
+        if (i==loop_end_index)   loop_end_samples   = total_samples;
+
+        total_samples += acm_stream->total_values / acm_stream->info.channels;
+
+        if (i>0) {
+            if (acm_stream->info.channels != data->files[0]->info.channels ||
+                acm_stream->info.rate     != data->files[0]->info.rate) goto fail;
+        }
+    }
+
+    if (i==loop_end_index)   loop_end_samples   = total_samples;
+
+    channel_count = data->files[0]->info.channels;
+    vgmstream = allocate_vgmstream(channel_count,loop_flag);
+    if (!vgmstream) goto fail;
+
+    vgmstream->channels = channel_count;
+    vgmstream->sample_rate = data->files[0]->info.rate;
+    vgmstream->coding_type = coding_ACM;
+    vgmstream->num_samples = total_samples;
+    vgmstream->loop_start_sample = loop_start_samples;
+    vgmstream->loop_end_sample = loop_end_samples;
+    vgmstream->layout_type = layout_mus_acm;
+    vgmstream->meta_type = meta_MUS_ACM;
+
+    data->file_count = file_count;
+    data->current_file = 0;
+    data->loop_start_file = loop_start_index;
+    data->loop_end_file = loop_end_index;
+    /*data->end_file = -1;*/
+
+    vgmstream->codec_data = data;
+
+    free(names);
+
+    return vgmstream;
+
+    /* clean up anything we may have opened */
+fail:
+    if (data) {
+        int i;
+        for (i=0;i<data->file_count;i++) {
+            if (data->files[i]) {
+                acm_close(data->files[i]);
+                data->files[i] = NULL;
+            }
+        }
+    }
+    if (names) free(names);
+    if (vgmstream) close_vgmstream(vgmstream);
+    return NULL;
+}
diff --git a/src/streamfile.c b/src/streamfile.c
index fc10cf41..51739551 100644
--- a/src/streamfile.c
+++ b/src/streamfile.c
@@ -202,3 +202,62 @@ STREAMFILE * open_stdio_streamfile_buffer(const char * const filename, size_t bu
 
     return streamFile;
 }
+
+/* Read a line into dst. The source files are MS-DOS style,
+ * separated (not terminated) by CRLF. Return 1 if the full line was
+ * retrieved (if it could fit in dst), 0 otherwise. In any case the result
+ * will be properly terminated. The CRLF will be removed if there is one.
+ * Return the number of bytes read (including CRLF line ending). Note that
+ * this is not the length of the string, and could be larger than the buffer.
+ * *line_done_ptr is set to 1 if the complete line was read into dst,
+ * otherwise it is set to 0. line_done_ptr can be NULL if you aren't
+ * interested in this info.
+ */
+size_t get_streamfile_dos_line(int dst_length, char * dst, off_t offset,
+        STREAMFILE * infile, int *line_done_ptr)
+{
+    int i;
+    off_t file_length = get_streamfile_size(infile);
+    /* how many bytes over those put in the buffer were read */
+    int extra_bytes = 0;
+
+    if (line_done_ptr) *line_done_ptr = 0;
+
+    for (i=0;i<dst_length-1 && offset+i < file_length;i++)
+    {
+        char in_char = read_8bit(offset+i,infile);
+        /* check for end of line */
+        if (in_char == 0x0d &&
+                read_8bit(offset+i+1,infile) == 0x0a)
+        {
+            extra_bytes = 2;
+            if (line_done_ptr) *line_done_ptr = 1;
+            break;
+        }
+
+        dst[i]=in_char;
+    }
+    
+    dst[i]='\0';
+
+    /* did we fill the buffer? */
+    if (i==dst_length) {
+        /* did the bytes we missed just happen to be the end of the line? */
+        if (read_8bit(offset+i,infile) == 0x0d &&
+                read_8bit(offset+i+1,infile) == 0x0a)
+        {
+            extra_bytes = 2;
+            /* if so be proud! */
+            if (line_done_ptr) *line_done_ptr = 1;
+        }
+    }
+
+    /* did we hit the file end? */
+    if (offset+i == file_length)
+    {
+        /* then we did in fact finish reading the last line */
+        if (line_done_ptr) *line_done_ptr = 1;
+    }
+
+    return i+extra_bytes;
+}
diff --git a/src/streamfile.h b/src/streamfile.h
index eea4b367..cd1bd879 100644
--- a/src/streamfile.h
+++ b/src/streamfile.h
@@ -134,4 +134,7 @@ static inline STREAMFILE * open_stdio_streamfile(const char * const filename) {
     return open_stdio_streamfile_buffer(filename,STREAMFILE_DEFAULT_BUFFER_SIZE);
 }
 
+size_t get_streamfile_dos_line(int dst_length, char * dst, off_t offset,
+                STREAMFILE * infile, int *line_done_ptr);
+
 #endif
diff --git a/src/vgmstream.c b/src/vgmstream.c
index 29a5feb7..84c7908b 100644
--- a/src/vgmstream.c
+++ b/src/vgmstream.c
@@ -94,6 +94,7 @@ VGMSTREAM * (*init_vgmstream_fcns[])(STREAMFILE *streamFile) = {
 	init_vgmstream_kcey,
 	init_vgmstream_ps2_rstm,
     init_vgmstream_acm,
+    init_vgmstream_mus_acm,
 	init_vgmstream_ps2_kces,
 	init_vgmstream_ps2_dxh,
 	init_vgmstream_ps2_psh,
@@ -379,6 +380,7 @@ void render_vgmstream(sample * buffer, int32_t sample_count, VGMSTREAM * vgmstre
             render_vgmstream_interleave_byte(buffer,sample_count,vgmstream);
             break;
         case layout_acm:
+        case layout_mus_acm:
             render_vgmstream_mus_acm(buffer,sample_count,vgmstream);
             break;
     }
@@ -1054,7 +1056,10 @@ void describe_vgmstream(VGMSTREAM * vgmstream, char * desc, int length) {
             break;
 #endif
         case layout_acm:
-            snprintf(temp,TEMPSIZE,"However ACM Does That");
+            snprintf(temp,TEMPSIZE,"ACM blocked");
+            break;
+        case layout_mus_acm:
+            snprintf(temp,TEMPSIZE,"multiple ACM files, ACM blocked");
             break;
         default:
             snprintf(temp,TEMPSIZE,"INCONCEIVABLE");
@@ -1368,6 +1373,9 @@ void describe_vgmstream(VGMSTREAM * vgmstream, char * desc, int length) {
             break;
         case meta_ACM:
             snprintf(temp,TEMPSIZE,"InterPlay ACM Header");
+            break;
+        case meta_MUS_ACM:
+            snprintf(temp,TEMPSIZE,"MUS playlist and multiple InterPlay ACM Headered files");
             break;
 		case meta_PS2_KCES:
             snprintf(temp,TEMPSIZE,"Konami KCES Header");
diff --git a/src/vgmstream.h b/src/vgmstream.h
index 0629b137..6eb395e8 100644
--- a/src/vgmstream.h
+++ b/src/vgmstream.h
@@ -111,6 +111,7 @@ typedef enum {
     layout_mpeg,            /* proper MPEG audio stream */
 #endif
     layout_acm,             /* dummy, let libacm handle layout */
+    layout_mus_acm,         /* mus has multi-files to deal with */
 } layout_t;
 
 /* The meta type specifies how we know what we know about the file. We may know because of a header we read, some of it may have been guessed from filenames, etc. */
diff --git a/unix/data.c b/unix/data.c
index 2f960a3a..5c42b15f 100644
--- a/unix/data.c
+++ b/unix/data.c
@@ -89,6 +89,7 @@ gchar *vgmstream_exts [] = {
   "kcey",
   "rstm",
   "acm",
+  "mus",
   /* terminator */
   NULL
 };
diff --git a/winamp/in_vgmstream.c b/winamp/in_vgmstream.c
index 1e787b08..38eb6415 100644
--- a/winamp/in_vgmstream.c
+++ b/winamp/in_vgmstream.c
@@ -150,6 +150,7 @@ char * extension_list[] = {
 	"kcey\0KCEY Audio File (*.KCEY)\0",
 	"rstm\0RSTM Audio File (*.RSTM)\0",
     "acm\0ACM Audio File (*.ACM)\0",
+    "mus\0MUS Playlist File (*.MUS)\0",
 	"kces\0KCES Audio File (*.KCES)\0",
 	"dxh\0DXH Audio File (*.DXH)\0",
 	"psh\0PSH Audio File (*.PSH)\0",