Vista - WPF and PowerPoint slides, Flash files, HD videos

Hi all,

We are creating a WPF application that is capable of displaying informations
/ schedules and ads.
These ads can be several different types, like PowerPoint slides, images,
Flash files, (HD) videos, ...

The real problem is that we didn't find any reasonable way to display those
PowerPoint slides, Flash files and HD videos inside our WPF app. MediaElement
can play videos, but HD videos either crash or are not shown correctly
(jitter).

Instanciating PowerPoint and showing the slide is not a real option because
we need a way to control the show (close it after a given timespan) and we
can't click to end the show.

Flash files are currently running inside an Flash-ActiveX / WindowsHost but
it crashes very very often :-(

Does anyone know a way of displaying POWERPOINT slides and FLASH files
inside a WPF app?
Any help appreciated!!!

TIA

--
*-- robert.oh. --*
*-- EPS Software Austria --*
*-- http://www.eps-software.at --*