Flickr, Picasa, Podcasts & more
We have also included support for Podcasts (sometimes referrred to as Vodcasts) which are really just RSS feeds containing video or audio. As an example check out the PBS podcast site for their television series ScienceNow: http://www.pbs.org/wgbh/nova/sciencenow/rss. You'll find a number of feeds any of which could easily be integrated into your signage.
We've provided an example using Picasa in our Knowledge Base here: