I cut the panel curtains on the long side to get 2 curtains out of 1.
Each curtain is now 23cm (9") large. I fixed the Benno DVD tower on the 2 long panels with 24cm (9.4") space in between for the curtains.
The spots are installed on the bottom panel between the DVD towers. I glued a piece of round wood at both ends of the curtains and fixed one end at the top panel. The wood at the lower end acts as a counterweight to keep the curtains tight.