Radiohead released In Rainbows via their website in October, telling listeners they could pay a sum they felt was appropriate.
However, Manics bassist Nicky Wire claimed the move has put further pressure on the already fragile music scene, saying: "Fair play to Radiohead for doing something different. It's certainly great for publicity but I think it kind of demeans music.
"Music used to be a market, now it's all gone digital. It's worrying and it seems to be the way of the world at the moment. Sales are doing well everywhere else. Cinema is doing well, video games are doing well but music isn’t. The free download phenomenon is ruining the industry."
Wire added that he believes TV talent shows have also played a part in the current state of the music business, telling the Daily Star: "I can't bear the X Factor judges and the s**t they put out every year. It's just a load of talentless f**kwits that destroy the industry."
Lily Allen also spoke out against Radiohead last month, claiming that their move makes it tough for new groups to compete because the band have the luxury of earning a fortune on tour. However, rapper Jay-Z described the idea as "genius".