Warner Music, the world's fourth-largest label, has agreed to let its entire catalog of music to be played via LastFM. The deal with Warner is the first that one of the Big Four music labels has made its music available to LastFM, which has over 15 million monthly users, CNET reports. LastFM is also in talks with the other major labels about making their catalogs available via the service.

LastFM monitors the music that each user listens to and accordingly recommends music that the user might enjoy. The site also allows music fans with similar tastes to communicate and share their playlists.

The site also provides an ad-supported stream of the music from the hundreds of independent labels it has deals with.