PiFace Display

A question of a customer:

I would love to add a PiFace Display to add to my RPi and DAC
combination. That way, i imagine, i could display the songnames and
artists name.

https://www.alternate.be/Raspberry_Pi_Foundation/PiFace_Control_and_Display/html/product/1111053/?tk=7&lk=6193

Do i have the possibility to do so with my DAC installed or do i have
to connect both devices by a flat cable ?
I cant find a shop selling 26 (2 x 13 -P1) lanes and 8 (2 x 4-P5) lanes
flatcables this fast in Belgium, and i would hate to have to order them
from the states, wich will cost me 25$ for shipping ...