Warner Music has signed a deal with media site 7digital.com to offer its music without copy protection.
Customers in the UK, Ireland, Spain, France and Germany will be able to download albums by artists such as Madonna and the Red Hot Chilli Peppers.
The MP3 files can be played on nearly all music devices including Apple's best selling iPod.
7digital.com is the first European site to offer Warner's music free of Digital Rights Management (DRM) systems.
The label had previously signed a deal with Amazon to sell its tracks in MP3 format. The service is currently only available in the US although this is expected to change later this year.