The site also has begun an extensive 30 day promotional campaign online and across CBS RADIO's 90+ music stations featuring free songs from a sampling of today's leading artists including Arcade Fire, Britney Spears, 30 Seconds to Mars, My Morning Jacket, Jennifer Hudson, and Moby, among others.

"MP3.com has been a cornerstone of the online music movement since the early days of the Internet," said David Goodman, President, CBS Interactive Music Group. "The time is right to build on that history with this robust content offering. In so doing, we are confident we can continue to invigorate our long-standing relationship with the music industry in a mutually beneficial way. We look forward to the many contributions MP3.com will make in that regard, and to bringing the full resources of CBS Interactive Music Group to bear in order to make a compelling product for music fans."

Independent and up-and-coming artists will continue to be a core component of MP3.com. Throughout the site's history, artists have been exposed to a captive and vocal community of music fans looking to discover tomorrow's biggest stars. Uploading content to MP3.com and its sister service, Last.fm, provides an introduction to an audience of nearly 40 million users.

Additional MP3.com features include:

Free MP3 of the Day: a complimentary track from a high-profile artist, along with relevant information about the song and musician;

Label of the Week: weekly postings showcasing a number of exciting free MP3s from artists on a notable record label;

On the Scene: editorial around cities, neighborhoods and regions that are important on the music scene. Free downloads will correlate to artists who got their start or are popular in the particular locale.

Unique editorial content posts; authoritative artist profile pages from Last.fm, the world's leading music discovery service; and headlines from CBS RADIO stations;

Dedicated artist radio stations provided by Last.fm; and music videos.