Fixed adding files in File Tree. Now adds when you press enter, and supports multiple selections.

FileTreeWindow/FileTreeWindowController.m

@@ -24,9 +24,44 @@
 	
 - (IBAction)addToPlaylist:(id)sender
 {
-	NSArray *urls = [NSArray arrayWithObject:[[outlineView itemAtRow:[outlineView clickedRow]] URL]];
+	unsigned int index;
+	NSIndexSet *selectedIndexes = [outlineView selectedRowIndexes];
+	NSMutableArray *urls = [[NSMutableArray alloc] init];
 
-	[playlistLoader addURLs:urls sort:NO];
+	for (index = [selectedIndexes firstIndex];
+		 index != NSNotFound; index = [selectedIndexes indexGreaterThanIndex: index])  
+	{
+		[urls addObject:[[outlineView itemAtRow:index] URL]];
 	}
 	
+	[playlistLoader addURLs:urls sort:NO];
+	[urls release];
+}
+
+- (void)keyDown:(NSEvent *)e
+{
+    unsigned int   modifiers = [e modifierFlags] & (NSCommandKeyMask | NSShiftKeyMask | NSControlKeyMask | NSAlternateKeyMask);
+    NSString       *characters = [e characters];
+	unichar        c;
+	
+	if ([characters length] != 1) 
+	{
+		[super keyDown:e];
+		
+		return;
+	}
+	
+	c = [characters characterAtIndex:0];
+
+	if (modifiers == 0 && (c == NSEnterCharacter || c == NSCarriageReturnCharacter))
+	{
+		[self addToPlaylist:self];
+	}
+	else
+	{
+		[super keyDown:e];
+	}
+}
+
+
 @end

Playlist/PlaylistController.m

@@ -569,16 +569,6 @@
 	[self updateIndexesFromRow:0];
 }
 
-- (NSMutableArray *)queueList
-{
-	return queueList;
-}
-
-- (IBAction)emptyQueueList:(id)sender
-{
-	[queueList removeAllObjects];
-}
-
 - (IBAction)showEntryInFinder:(id)sender
 {
 	NSWorkspace* ws = [NSWorkspace sharedWorkspace];
@@ -601,6 +591,17 @@
     [spotlightWindowController searchForAlbum:[entry album]];
 }
 
+- (NSMutableArray *)queueList
+{
+	return queueList;
+}
+
+- (IBAction)emptyQueueList:(id)sender
+{
+	[queueList removeAllObjects];
+}
+
+
 - (IBAction)addToQueue:(id)sender
 {
 	for (PlaylistEntry *queueItem in [self selectedObjects])