You can set VLC to display a video as 3 sections, then full screen each one on the correct screen.
The setting is in Settings -> Preferences then, on the side menu, expand the Video option and select Filters and check "Wall video filter". Finally, expand filters, select Image Wall and set the number of columns to 3, number of rows to 1 and your aspect ratio to 10:16. Now just Save and you should be set.
When you don't want to use it, I think you can just toggle the wall filter on and off without having to muck about with the rest of the settings every time.
Thanks, It works!. I tested with three columns with 15:24 (15:8 / 3 monitors) and works fine (tested only with my 3x19" th2go config)
Will this setup be specificly for video viewing or will it be used for other desktop uses too? I would suggest 3 720p LCD tvs if you're gearing towards video only. There are several freeware video player solutions that work with triple screen. media player classic and vlc both work once preferences are setup. With VLC you could even play your HD cable tv streaming in via firewire connector from your set top box.
It´s for gaming, video (15:8, not very distorted), desktop (massive 3x2560x1600), gaming, with 3x2560x1600 with dual config th2go/softth (switching between them, depending game compatibility/performance), or 3x1600x2500 (3x portrait mode for triple head gaming with bad FOV support & movies, as 30:16 is not far from 16:10/16:9), and 1x2560x1600 (other two with desktop) for all other cases.