Probably a bit late on this. I needed a slideshow a while back and couldnt find one that suited so I hacked fltv and used image rotator by longtail video. All you need is a valid playlist file stored locally. It is done so you can easily display different slideshows on different pages or even in the same page.
I also hacked the easymedia button to work with this bot.
I have this on a Mambo site, but I'm pretty sure i tested it on a Mia one as well.
I am not a programmer but just worked out what i think does what and hacked something that already works, so if doesnt work i cant really help, sorry (plus it was a while ago).
http://alphadog.net.au/publicfiles/bot_
_1.0.0.zip
http://alphadog.net.au/publicfiles/easy
_1.0.0.zip
in action here
http://alphadog.net.au/index.php?option
;Itemid=85
From memory I think that I also used it to display a single image centered, as I could not do that using the wysiwyg editor
Many people confuse having a clear conscience with having a short memory.