This 'Not For Sale' CD-i disc was a Dolby Surround demonstration disc by Dureco (a record label that was famous in The Netherlands), licensed by Crystal Entertainment, showcasing audio material of the AÏDA performance at the RAI Parkhal in Amsterdam on June 26th, 1993. Next to CD-i information, this disc holds a couple of audio tracks, which makes this a CD-i Ready disc. You can play this disc on your audio player, as well as on your CD-i. The simulated surround sound by Dolby was one of the key features of this demo, to let you hear the difference and promote the audio capabilities of the CD-i format.
[Thanks, jae65]