Nearly two thirds (64 percent) of Brits think CDs will be obsolete by 2015, says MyVoucherCodes.

Research by the discount vouchers site revealed more than half (56 percent) believe all music will be purchased in digital formats in four years' time, while one in five (21 percent) believe the hardware to play CDs will no longer be available by 2015.

More than two in five (42 percent) say they have not purchased a CD in the past six months, while 12 percent claim they'll never buy a CD again. However, nearly two thirds said they'd bought a digital music file in the last six months.

Nearly a third also believe the DVD will be obsolete by 2020, with 67 percent saying they expect all films to be downloaded or streamed over the web by the start of the next decade.

MyVoucherCodes also said more than a quarter (26 percent) think Blu-ray discs will be the dominant format for film sales during 2011.

"With the popularity of MP3 players forever growing, it isn't surprising to see that many now prefer to purchase an MP3 straight off the internet, rather than importing CDs on their laptop or computer," said Mark Pearson, chairman of MyVoucherCodes.

"If this trend continues to grow it is more than likely that the CD may disappear into technology's past; especially when considering the fate of the mini-disc."

See also: 64% of Brits prefer CDs to digital music