Flexi discs were cool inserts for some home computer magazines; you'd dub the flexi disc to music cassette, and the noise and beeps were computer programs for your home computer.

I remember our home stereo in the 1970s had a rubber non-slip-matt with concentric grooves in it, often flexi-discs were so flexi that that the needle would follow the groove on the other side instead of the one on the disc. They were almost unplayable on that unless you set the tonearm counter-weights to as light as possible.

That built-in obsolescence was often the point of flexi-discs as they were typically used as giveaways in magazines with the goal of promoting the artist - the faster it wears out, the sooner the consumer is likely to go purchase the real thing.