Fixed mpcdec framework settings to get it to compile in debug configuration on case-sensitive FS. (Modified case from MPCDec to mpcdec, as I already did for release configuration).

Frameworks/MPCDec/MPCDec.xcodeproj/project.pbxproj

@@ -283,7 +283,7 @@
 				HEADER_SEARCH_PATHS = Files/include/;
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "@loader_path/../Frameworks";
-				PRODUCT_NAME = MPCDec;
+				PRODUCT_NAME = mpcdec;
 				WRAPPER_EXTENSION = framework;
 				ZERO_LINK = YES;
 			};

Spotlight/SpotlightPlaylistEntry.h

@@ -16,6 +16,7 @@
 }
 
 +(SpotlightPlaylistEntry *)playlistEntryWithMetadataItem:(NSMetadataItem *)metadataItem;
++ (NSArray *)allmdKeys;
 
 @property(copy) NSNumber *length;
 @end

Spotlight/SpotlightPlaylistEntry.m

@@ -20,7 +20,7 @@ static NSArray * extramdKeys;
 // allmdKeys is a combined array of both mdKeys and entryKeys
 static NSArray * allmdKeys;
                      
-// And the dictionary that matches them
+// tags matches mdKeys and entryKeys for automated extraction
 static NSDictionary * tags;
 
 @implementation SpotlightPlaylistEntry
@@ -51,6 +51,12 @@ static NSDictionary * tags;
     tags = [NSDictionary dictionaryWithObjects:entryKeys forKeys:mdKeys];
 }
 
+// Use this to access the array of all the keys we want.
++ (NSArray *)allmdKeys
+{
+    return allmdKeys;
+}
+
 + (SpotlightPlaylistEntry *)playlistEntryWithMetadataItem:(NSMetadataItem *)metadataItem
 {
     // use the matching tag sets to generate a playlist entry
@@ -65,6 +71,7 @@ static NSDictionary * tags;
     [entry setURL: [NSURL fileURLWithPath: [songAttributes objectForKey:@"kMDItemPath"]]];
     
     // Authors is an array, but we only care about the first item in it
+    
     [entry setArtist: [[songAttributes objectForKey:@"kMDItemAuthors"] objectAtIndex:0]];
     return entry;
 }

Spotlight/SpotlightSearchController.m

@@ -22,13 +22,14 @@ static NSPredicate * musicOnlyPredicate = nil;
                         @"kMDItemContentTypeTree==\'public.audio\'"] retain];
     
     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
+    
+    // Set the home directory as the default search directory
     NSString * homeDir = @"~";
     homeDir = [homeDir stringByExpandingTildeInPath];
     homeDir = [[NSURL fileURLWithPath:homeDir isDirectory:YES] absoluteString];
     NSDictionary *searchDefault = 
                         [NSDictionary dictionaryWithObject:homeDir
                                                     forKey:@"spotlightSearchPath"];
-
     [defaults registerDefaults:searchDefault];
 }
 
@@ -46,11 +47,14 @@ static NSPredicate * musicOnlyPredicate = nil;
 {
     unsigned options = (NSCaseInsensitivePredicateOption|
                         NSDiacriticInsensitivePredicateOption);
+                        
+    // Set scope to contents of pathControl
     [self.query setSearchScopes:[NSArray arrayWithObjects:pathControl.URL, nil]];
+    
 	NSString *processedKey = [NSString stringWithFormat: @"*%@*", self.searchString];
 	
 	NSPredicate *searchPredicate = [NSComparisonPredicate
-	         predicateWithLeftExpression:[NSExpression expressionForKeyPath:@"*"]
+	         predicateWithLeftExpression:[NSExpression expressionForKeyPath:@"kMDItemAuthors"]
 	                     rightExpression:[NSExpression expressionForConstantValue:processedKey]
 	                            modifier:NSDirectPredicateModifier
 	                                type:NSLikePredicateOperatorType