Music. A constantly changing and evolving body of work, not the same 200, 300 or even 400 orginal vinyl records on a loop.
The music was played on a variety of original vinyl, pressings, emi-discs, British reissues, compilation albums, tapes and stages. It was not played on CDs because they didn't exist nor computers because they weren't yet clever enough.
The music was played by DJs like Roger Eagle, Carl Dene, Brian Phillips, Brian Rae, Les Cokell, Ian Levine and Colin Curtis.
Of course it is perfectly acceptable for people to continue with vinyl if they choose to and, to my knowledge, nobody has suggested otherwise - this is what's known as a fallacy - just so long as they don't mistake it for music - like confusing collecting stamps with the postal service - or turn it into prejudice against those who choose to consume and present music in other ways.
Of all the issues surrounding the culture of music, the exclusion of CDs is the one which people find the most perplexing and preposterous.