Photoframe for a Cube with free software

[Adam Bridge]

I have a Cube that i use to serve family calendars etc. I'd like to
use it as a photoframe but with free software.

What would you recommend?

I can control it with Remote Desktop so that's not a biggie - but
something to show an array of images, maybe with something like the
zoom and pan that Apple uses in its screen saver would be fun.

Thanks for ideas...

Adam