Quoted from CLEllison:
No expert here, but a quick read on specs shows the lower the P number the higher the pixel count. So with that being said, this is the same size but a P2. That certainly would help out with a higher res right? (Ssme dimensions 320x160) next question where would I get colored stuff for my LOTR?
ebay.com link » 128 64 Pixels Led Matrix Rgb P2 5 Indoor Full Color Led Display Module 320 160mm
That's making some pretty big assumptions: I'm skeptical that just hooking up two of those displays that it would magically extrapolate a 128x32 signal.
Even if it did, that's not going to magically increase the resolution either: the source is still 128x32. What does it matter if one dot is now displayed as 4 pixels? If it worked, it'd be a similar effect to switching from Dots XL to Tile on a ColorDMD LCD.
Among others, the question you'd need to ask is "where do I get high res DMD graphics for LOTR?" Answer: nowhere. You'd have to create new source graphics like CGC does with their remakes.