The KLF had an earlier copyright dispute with ABBA. The KLF lost, but later released a censored version of the disputed LP with the disputed samples removed, as well as written instructions on how to recreate the original. The entire album, without the samples ABBA insisted be removed, is available in mp3 format here. The text on the edge of the label of both sides of the LP stated:
All sounds on this recording have been captured by the KLF. In the name of Mu, we hereby liberate these sounds from all copyright restrictions, without prejudice. A KLF Communication.A precursor to Creative Commons licensing?
It may not be shocking to learn that bootlegs of the original LP are available.