diff --git a/Info.plist b/Info.plist
index a00d7d4f0..5092a6acf 100644
--- a/Info.plist
+++ b/Info.plist
@@ -22,6 +22,20 @@
 			<key>CFBundleTypeRole</key>
 			<string>None</string>
 		</dict>
+		<dict>
+			<key>CFBundleTypeExtensions</key>
+			<array>
+				<string>mo3</string>
+			</array>
+			<key>LSTypeIsPackage</key>
+			<false/>
+			<key>CFBundleTypeRole</key>
+			<string>Viewer</string>
+			<key>CFBundleTypeIconFile</key>
+			<string>song.icns</string>
+			<key>CFBundleTypeName</key>
+			<string>MO3 Audio File</string>
+		</dict>
 		<dict>
 			<key>CFBundleTypeExtensions</key>
 			<array>
diff --git a/Plugins/Dumb/Dumb.xcodeproj/project.pbxproj b/Plugins/Dumb/Dumb.xcodeproj/project.pbxproj
index a7d281006..ccd30fa76 100644
--- a/Plugins/Dumb/Dumb.xcodeproj/project.pbxproj
+++ b/Plugins/Dumb/Dumb.xcodeproj/project.pbxproj
@@ -19,6 +19,9 @@
 		8337AAEE17FFA0000081AFF8 /* unrealfmtdata.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 8337AAEA17FFA0000081AFF8 /* unrealfmtdata.cpp */; };
 		8337AAF117FFA2D30081AFF8 /* j2b.c in Sources */ = {isa = PBXBuildFile; fileRef = 8337AAEF17FFA2D30081AFF8 /* j2b.c */; };
 		8337AAF317FFA7640081AFF8 /* libz.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 8337AAF217FFA7640081AFF8 /* libz.dylib */; };
+		83527EE818242FD5002F170E /* libunmo3.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = 83527EE618242FD5002F170E /* libunmo3.dylib */; };
+		83527EEB18243069002F170E /* mo3.c in Sources */ = {isa = PBXBuildFile; fileRef = 83527EEA18243069002F170E /* mo3.c */; };
+		83527EED182432CA002F170E /* libunmo3.dylib in CopyFiles */ = {isa = PBXBuildFile; fileRef = 83527EE618242FD5002F170E /* libunmo3.dylib */; };
 		8D5B49B0048680CD000E48DA /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = 089C167DFE841241C02AAC07 /* InfoPlist.strings */; };
 		8D5B49B4048680CD000E48DA /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 1058C7ADFEA557BF11CA2CBB /* Cocoa.framework */; };
 /* End PBXBuildFile section */
@@ -53,6 +56,16 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};
+		83527EEC182432BD002F170E /* CopyFiles */ = {
+			isa = PBXCopyFilesBuildPhase;
+			buildActionMask = 2147483647;
+			dstPath = "";
+			dstSubfolderSpec = 6;
+			files = (
+				83527EED182432CA002F170E /* libunmo3.dylib in CopyFiles */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
 /* End PBXCopyFilesBuildPhase section */
 
 /* Begin PBXFileReference section */
@@ -78,6 +91,10 @@
 		8337AAEF17FFA2D30081AFF8 /* j2b.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = j2b.c; sourceTree = "<group>"; };
 		8337AAF017FFA2D30081AFF8 /* j2b.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = j2b.h; sourceTree = "<group>"; };
 		8337AAF217FFA7640081AFF8 /* libz.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libz.dylib; path = usr/lib/libz.dylib; sourceTree = SDKROOT; };
+		83527EE618242FD5002F170E /* libunmo3.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libunmo3.dylib; path = ../../../ThirdParty/BASS/libunmo3.dylib; sourceTree = "<group>"; };
+		83527EE718242FD5002F170E /* unmo3.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = unmo3.h; path = ../../../ThirdParty/BASS/unmo3.h; sourceTree = "<group>"; };
+		83527EE918243029002F170E /* mo3.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = mo3.h; path = mo3/mo3.h; sourceTree = "<group>"; };
+		83527EEA18243069002F170E /* mo3.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = mo3.c; path = mo3/mo3.c; sourceTree = "<group>"; };
 		8384912B1808155E00E7332D /* Logging.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = Logging.h; path = ../../Utils/Logging.h; sourceTree = "<group>"; };
 		8D5B49B6048680CD000E48DA /* Dumb.bundle */ = {isa = PBXFileReference; explicitFileType = wrapper.cfbundle; includeInIndex = 0; path = Dumb.bundle; sourceTree = BUILT_PRODUCTS_DIR; };
 		8D5B49B7048680CD000E48DA /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; path = Info.plist; sourceTree = "<group>"; };
@@ -90,6 +107,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				8337AAF317FFA7640081AFF8 /* libz.dylib in Frameworks */,
+				83527EE818242FD5002F170E /* libunmo3.dylib in Frameworks */,
 				17C8F7B90CBEF380008D969D /* Dumb.framework in Frameworks */,
 				8D5B49B4048680CD000E48DA /* Cocoa.framework in Frameworks */,
 			);
@@ -191,6 +209,7 @@
 		8337AAE317FFA0000081AFF8 /* archive */ = {
 			isa = PBXGroup;
 			children = (
+				83527EE518242FBE002F170E /* mo3 */,
 				8337AAE417FFA0000081AFF8 /* j2b */,
 				8337AAE517FFA0000081AFF8 /* umx */,
 			);
@@ -219,6 +238,17 @@
 			path = umx;
 			sourceTree = "<group>";
 		};
+		83527EE518242FBE002F170E /* mo3 */ = {
+			isa = PBXGroup;
+			children = (
+				83527EEA18243069002F170E /* mo3.c */,
+				83527EE918243029002F170E /* mo3.h */,
+				83527EE618242FD5002F170E /* libunmo3.dylib */,
+				83527EE718242FD5002F170E /* unmo3.h */,
+			);
+			name = mo3;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXNativeTarget section */
@@ -230,6 +260,7 @@
 				8D5B49B1048680CD000E48DA /* Sources */,
 				8D5B49B3048680CD000E48DA /* Frameworks */,
 				17C8F6A20CBEE86E008D969D /* CopyFiles */,
+				83527EEC182432BD002F170E /* CopyFiles */,
 			);
 			buildRules = (
 			);
@@ -303,6 +334,7 @@
 				8337AAEC17FFA0000081AFF8 /* umx.mm in Sources */,
 				8335FF6717FF6FD9002D8DD2 /* DumbContainer.m in Sources */,
 				17C8F6950CBEE846008D969D /* DumbDecoder.m in Sources */,
+				83527EEB18243069002F170E /* mo3.c in Sources */,
 				8337AAEE17FFA0000081AFF8 /* unrealfmtdata.cpp in Sources */,
 				17DA363E0CC0600E0003F6B2 /* DumbMetadataReader.m in Sources */,
 			);
@@ -347,6 +379,10 @@
 				);
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Library/Bundles";
+				LIBRARY_SEARCH_PATHS = (
+					"$(inherited)",
+					/Users/Chris/Source/Repos/cog/ThirdParty/BASS,
+				);
 				OBJROOT = ../../build;
 				PRODUCT_NAME = Dumb;
 				SKIP_INSTALL = YES;
@@ -369,6 +405,10 @@
 				);
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Library/Bundles";
+				LIBRARY_SEARCH_PATHS = (
+					"$(inherited)",
+					/Users/Chris/Source/Repos/cog/ThirdParty/BASS,
+				);
 				OBJROOT = ../../build;
 				PRODUCT_NAME = Dumb;
 				SKIP_INSTALL = YES;
diff --git a/Plugins/Dumb/DumbDecoder.m b/Plugins/Dumb/DumbDecoder.m
index af52f3c6a..f4d18a894 100755
--- a/Plugins/Dumb/DumbDecoder.m
+++ b/Plugins/Dumb/DumbDecoder.m
@@ -10,6 +10,7 @@
 
 #import "umx.h"
 #import "j2b.h"
+#import "mo3.h"
 
 #import "Logging.h"
 
@@ -19,6 +20,7 @@ struct MEMANDFREEFILE
 {
 	char *ptr, *ptr_begin;
 	long left, size;
+    int is_mo3;
 };
 
 static int dumb_maffile_skip(void *f, long n)
@@ -51,7 +53,8 @@ static long dumb_maffile_getnc(char *ptr, long n, void *f)
 static void dumb_maffile_close(void *f)
 {
     struct MEMANDFREEFILE *m = f;
-    free(m->ptr_begin);
+    if (m->is_mo3) freeMo3(m->ptr_begin);
+    else free(m->ptr_begin);
 	free(f);
 }
 
@@ -83,17 +86,26 @@ static const DUMBFILE_SYSTEM maffile_dfs = {
 
 DUMBFILE *dumbfile_open_memory_and_free(char *data, long size)
 {
-    char * try_data = unpackUmx( data, &size );
+    int is_mo3 = 0;
+    char * try_data = unpackMo3( data, &size );
     if ( try_data ) {
         free( data );
         data = try_data;
+        is_mo3 = 1;
     }
     else {
-        try_data = unpackJ2b( data, &size );
+        try_data = unpackUmx( data, &size );
         if ( try_data ) {
             free( data );
             data = try_data;
         }
+        else {
+            try_data = unpackJ2b( data, &size );
+            if ( try_data ) {
+                free( data );
+                data = try_data;
+            }
+        }
     }
     
 	struct MEMANDFREEFILE *m = malloc(sizeof(*m));
@@ -103,6 +115,7 @@ DUMBFILE *dumbfile_open_memory_and_free(char *data, long size)
 	m->ptr = data;
 	m->left = size;
 	m->size = size;
+    m->is_mo3 = is_mo3;
     
 	return dumbfile_open_ex(m, &maffile_dfs);
 }
@@ -319,7 +332,7 @@ int callbackLoop(void *data)
 
 + (NSArray *)fileTypes 
 {	
-	return [NSArray arrayWithObjects:@"it", @"itz", @"xm", @"xmz", @"s3m", @"s3z", @"mod", @"mdz", @"stm", @"stz", @"ptm", @"mtm", @"669", @"psm", @"am", @"j2b", @"dsm", @"amf", @"okt", @"okta", @"umx", nil];
+	return [NSArray arrayWithObjects:@"it", @"itz", @"xm", @"xmz", @"s3m", @"s3z", @"mod", @"mdz", @"stm", @"stz", @"ptm", @"mtm", @"669", @"psm", @"am", @"j2b", @"dsm", @"amf", @"okt", @"okta", @"umx", @"mo3", nil];
 }
 
 + (NSArray *)mimeTypes 
diff --git a/Plugins/Dumb/archive/j2b/j2b.h b/Plugins/Dumb/archive/j2b/j2b.h
index 6042b2a46..95c9b745b 100644
--- a/Plugins/Dumb/archive/j2b/j2b.h
+++ b/Plugins/Dumb/archive/j2b/j2b.h
@@ -1,5 +1,5 @@
 //
-//  umx.h
+//  j2b.h
 //  Dumb J2B Archive parser
 //
 //  Created by Christopher Snowhill on 10/4/13.
diff --git a/Plugins/Dumb/archive/mo3/mo3.c b/Plugins/Dumb/archive/mo3/mo3.c
new file mode 100644
index 000000000..eacbdc2d0
--- /dev/null
+++ b/Plugins/Dumb/archive/mo3/mo3.c
@@ -0,0 +1,44 @@
+//
+//  mo3.c
+//  Dumb MO3 Archive parser
+//
+//  Created by Christopher Snowhill on 11/1/13.
+//  Copyright 2013 __NoWork, Inc__. All rights reserved.
+//
+
+#include "mo3.h"
+
+#include <stdint.h>
+typedef uint32_t DWORD;
+
+#include "unmo3.h"
+
+#include <limits.h>
+#include <string.h>
+
+void * unpackMo3( const void * in, long * size )
+{
+    void * data;
+    int len;
+    
+    if ( *size > INT_MAX )
+        return 0;
+    
+    if ( memcmp( in, "MO3", 3 ) != 0 )
+        return 0;
+    
+    data = (void *) in;
+    len = (int) *size;
+    
+    if ( UNMO3_Decode( &data, &len, 0 ) != 0 )
+        return 0;
+    
+    *size = len;
+    
+    return data;
+}
+
+void freeMo3( void * in )
+{
+    UNMO3_Free( in );
+}
diff --git a/Plugins/Dumb/archive/mo3/mo3.h b/Plugins/Dumb/archive/mo3/mo3.h
new file mode 100644
index 000000000..ad73dea22
--- /dev/null
+++ b/Plugins/Dumb/archive/mo3/mo3.h
@@ -0,0 +1,16 @@
+//
+//  mo3.h
+//  Dumb MO3 Archive parser
+//
+//  Created by Christopher Snowhill on 11/1/13.
+//  Copyright 2013 __NoWork, Inc__. All rights reserved.
+//
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    extern void * unpackMo3( const void * in, long * size );
+    extern void freeMo3( void * in );
+#ifdef __cplusplus
+};
+#endif
diff --git a/ThirdParty/BASS/libunmo3.dylib b/ThirdParty/BASS/libunmo3.dylib
new file mode 100755
index 000000000..67e9ced3b
Binary files /dev/null and b/ThirdParty/BASS/libunmo3.dylib differ
diff --git a/ThirdParty/BASS/unmo3.h b/ThirdParty/BASS/unmo3.h
new file mode 100755
index 000000000..88a2c114f
--- /dev/null
+++ b/ThirdParty/BASS/unmo3.h
@@ -0,0 +1,33 @@
+/*
+	UNMO3 library C/C++ header file
+	Copyright (c) 2010-2013 Un4seen Developments Ltd.
+
+	Free for non-commercial use
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef _WIN32
+#define WINAPI
+#endif
+
+// Get the UNMO3 library version
+DWORD WINAPI UNMO3_GetVersion();
+
+// Decode a MO3 file
+// in: data/len = MO3 data/len
+// out: data/len = decoded data/len (if successful)
+// return: 0 = Success, 2 = It isn't a MO3 file, 3 = There was a problem decoding the MO3 file
+int WINAPI UNMO3_Decode(void **data, int *len, DWORD flags);
+
+// UNMO3_Decode flags
+#define UNMO3_DECODE_NOSAMPLES	1 // don't process sample data
+
+// Free the data returned by UNMO3_Decode
+void WINAPI UNMO3_Free(void *data);
+
+#ifdef __cplusplus
+}
+#endif