In-store video screens.

ok the company I work for has 4 locations across 3 cities, Having a total of 10 instore tv screens to display our own promo videos which I make.

The problem is everytime I make a new video I have to burn 10 new discs and distribute them to all the stores so the video can be played on every screen in each store.

I am wondering if there is some sort of machine we could buy that can hold all of the videos I create and play on each screen in the stores. and each time I make a new video just upload it to the machine?

Another feature I would lke if possible ( I dont believe this is possible on DVDs) is the ability to have an interface of all the available videos, then select any number of videos clips you would like to play and then loop those videos. like say there is 10 clips and we decide we want the screen to just loop through 2,4,and 7 today and tomorrow we decide we want to loop through 4,5,6 and 9. etc.

If anyone knows of any devices that may help me out that would br great thanks!