Last.fm has expanded its content partnerships with record labels through a deal with IODA. Under the agreement, IODA will license its full catalog of more than 800,000 tracks to Last.fm's customized radio service, a key part of the music social networking site.

Last.fm tracks member music usage and preferences to recommend music to other members. It generates over 500 million monthly track submissions from music fans in over 200 countries by linking all members' media players to the Last.fm database.

As previously reported, the company recently soft-launched a subscription service and has additional content partnerships in place with The Orchard, Warner Music Group and EMI.