Reply to DIY S4 question: How to recreate the loop-size LCD display

Anyone have any ideas how this could be achieved? If you look at the S4, on each deck it has a 2 digit LCD display showing the current loop size. This can be changed by rotating an encoder. I'm guessing that it's possible for Traktor to output the current loop size via midi but how/what would you send this to? There's probably a way to do it using Midibox hardware but I'm looking for a cheaper/easier solution... any ideas?

One way would be to use a different LED for each loop size (1,2,4,8,16,32,etc) and then illuminate the corresponding LED when the loop size is changed... would be nice to use a 2 digit calculator style LCD though...