I'm looking to build a handful of multimedia kiosks for a project. 
The main features of these kiosks is to display MPEG videos in a
playlist.  Simple enough so far, but the part I'm having trouble
finding a solution is that the playlists need to be able to be
adjusted on the fly without affecting the display and they need to be
able to change on a schedule (ie: playlist a plays in the morning,
playlist b plays in the afternoon, etc.)

Does anybody know of a package or packages that might accomplish this?

-- 
Donovan Niesen
dniesen at gmail.com