Fixed compiler warnings by converting PlaylistEntry length property to NSNumber.

Playlist/PlaylistController.m

@@ -102,8 +102,8 @@
 	ldiv_t hoursAndMinutes;
 	
 	for (PlaylistEntry *pe in [self arrangedObjects]) {
-		if (!isnan(pe.length))
-			tt += pe.length;
+        if (!isnan([pe.length doubleValue]))
+            tt += [pe.length doubleValue];
 	}
 	
 	int sec = (int)(tt);

Playlist/PlaylistEntry.h

@@ -48,7 +48,7 @@ typedef enum {
 - (void)readPropertiesThread;
 
 @property(readonly) NSString *display;
-@property(readonly) double length;
+@property(retain, readonly) NSNumber *length;
 @property(readonly) NSString *path;
 @property(readonly) NSString *filename;
 

Playlist/PlaylistEntry.m

@@ -105,16 +105,19 @@
 	}
 }
 
-- (double)length
+@dynamic length;
+- (NSNumber *)length
 {
-	return ((double)self.totalFrames / self.sampleRate);
+    return [NSNumber numberWithDouble:((double)self.totalFrames / self.sampleRate)];
 }
 
+@dynamic path;
 - (NSString *)path
 {
 	return [[self.URL path] stringByAbbreviatingWithTildeInPath];
 }
 
+@dynamic filename;
 - (NSString *)filename
 {
 	return [[self.URL path] lastPathComponent];

Spotlight/SpotlightPlaylistEntry.h

@@ -16,7 +16,5 @@
 
 + (SpotlightPlaylistEntry *)playlistEntryWithMetadataItem:(NSMetadataItem *)metadataItem;
 
-// New length getters/setters
-
-@property(retain) NSNumber *length;
+@property(retain, readwrite) NSNumber *length;
 @end