After finding out in the general forum that Wendy Filters can't check the time or date and then turn themselves off or on, I'm following Tony's advice and reposting here.

The general idea is that it would be cool if filters could be set to check the date and time on the player thus deciding whether or not to set themselves. In a practical example, Xmas music wouldn't even show up on your player until say Thanksgiving and would then blissfully disappear the day after Xmas. All without messing around with playlists. I'm not sure what this even entails so I'd be grateful if someone with a working knowledge of the software would post a sort of flow chart of how it might work.