Online Slideshow Script

I am looking for a script that could create a Flash movie (slideshow) or any other format from images uploaded to a website. I would also like the ability to add text to each images (preferably right in the middle of the image. The ability to add music to the movie is also needed. The movie created then would play on any web browsers. The text needs to be customizable (i.e. font, color etc...) - The speed at which the image scrolls needs to also be customizable. This would also need to be available for multiple users.