"LAB CD-i" released in 1996 a series of discs called "Más Que Cine" (More than Cinema), a CD-i Bridge discs that functions as CD-i, Video CD and CD-ROM, so it plays in all compatible players supporting one of these formats. Next to the movie, there is also an interactive educational part (including history). These images were brought to the CD-i community by Xenon (Salva), who brought us more Spain-exclusive CD-i discs. Xenon (Salva): "I have this and I know that more titles came out. This is on on CD-i, which has the movie on two discs and an interactive / educational app. It also has music and in one of the photos you see images from the film that explain the plot with voice."
The Spanish language barriere holds me from understanding it completely, but it seems like a disc project that includes more than purely the movie, but also offers CD-i and CD-ROM exclusive parts, offering information on the soundtrack, the history, the plot.
Whoever knows more, please let us know (also if you find other entries in this series)
[Thanks, Xenon (Salva)]