Links to 7digital.com's music store will be integrated within all international versions of Spotify, beginning with the UK, France, Spain and Germany.
Spotify users will be able to buy high-quality 320kbps MP3 downloads from the six-million strong catalogue of tracks available on 7digital.com. A selection of FLAC downloads will also be available.
Anyone listening to music being streamed on Spotify will simply have to click the 'Buy from 7digital.com' button to download individual tracks or an album. The 'Buy from...' links should be live on the Spotify UK site by the end of today.
7digital currently sells individual tracks from 50p-99p, and albums from around £3.
One-click purchases planned
In the future, there will be an option to purchase playlists created within Spotify. And eventually Spotify users will be able purchase and download music within the Spotify application itself, without being transferred to the 7digital.com site.
All tracks and albums downloaded via the new service can be transferred to a PC, MP3 player or other portable digital device.
This latest development follows the news earlier this month that 7digital.com had teamed up with Songbird to integrate the latter's media player into 7digital's music service.
"This is the first stage of a partnership that will create a more integrated download experience for 7digital and Spotify customers," says Ben Drury, CEO of 7digital.
"We're already looking to build on the existing integration and, ultimately, allow users to listen and buy MP3s securely with one or two clicks."