While I dont work for Scala themselves, I do work for a reseller company. Check them out http://www.scala.com/ They are far and wide the easiest solution out there, Editing is done from an interface called the designer, where branches can be created, events can be acted upon. You upload this data to a content manager which pushes all the data out to your digital signs. You can update all of the signs remotely given that they have network access to the content manager.

I guess I don't understand the problem with light prejudice. Cultures are different. There is a distinct black culture, and also a distinct white culture. This can be extended to mexicans, asians, indians, arabs, africans. I don't think it serves anyone to pretend that race makes no difference, because honestly it does. Not saying we have to treat each other differently based upon races, but if you pretend there is no cultural differences its like plugging up your ears and going lalalala. Anyway yes some people will break from the mold but at the same time, the race/culture that you belong to shape you and define you in some ways, maybe not completely, but they definitely are a part of who you are.

Anyway the point I try to make is that recognizing cultural differences is not bad. Hate because of racial differences is.