Fix VGM parsing so it doesn't hit the other two registered VGM container handlers

Plugins/GME/GameContainer.m

@@ -18,7 +18,9 @@
 + (NSArray *)fileTypes
 {
 	//There doesn't seem to be a way to get this list. These are the only multitrack types.
-	return [NSArray arrayWithObjects:@"ay", @"gbs", @"hes", @"kss", @"nsf", @"nsfe", @"sap", @"sgc", nil];
+	return [NSArray arrayWithObjects:@"ay", @"gbs", @"hes", @"kss", @"nsf", @"nsfe", @"sap", @"sgc",
+        @"vgm",@"vgz", // These are included so they can override AdPlug
+            nil];
 }
 
 + (NSArray *)mimeTypes 
@@ -38,6 +40,14 @@
         // input url already has fragment defined - no need to expand further
         return [NSMutableArray arrayWithObject:url];
     }
+
+    // Dodge both VGMStream and AdPlug
+    NSString * extension = [url pathExtension];
+    if (extension && ([extension caseInsensitiveCompare:@"vgm"] == NSOrderedSame ||
+                      [extension caseInsensitiveCompare:@"vgz"] == NSOrderedSame))
+    {
+        return [NSMutableArray arrayWithObject:[NSURL URLWithString:[[url absoluteString] stringByAppendingString:@"#0"]]];
+    }
     
     id audioSourceClass = NSClassFromString(@"AudioSource");
     id<CogSource> source = [audioSourceClass audioSourceForURL:url];