Terms of the deal that brought the Beatles music to iTunes couldn't be learned, and it was unclear whether other online music services would gain access to the catalog too.

WSJ: Apple Gets Rights to Sell Digital Beatles Music

Instead of driving sales, commercial radio stations are able to have access to a huge catalog of music that they don't need to fully pay for.

FORBES: Digital Tools

Whether it's free streaming2 on Windows 8, a subscription on Windows Phone 8 or tuning into a playlist on Xbox 360 - each experience is cloud-based for immediate access to your entire catalog, making music management simple.

ENGADGET: Xbox Music heads to Xbox 360 first tomorrow, PC / tablets on Oct. 26, WP8 soon after; we go hands-on

Premium Spotify subscribers can now enjoy unlimited on-demand access to Spotify's catalog of over 15 million songs in excellent sound quality (available in up to 320kbps) on their home entertainment system.

ENGADGET: Spotify streaming hits the living room on the latest $99 WDTV Live, WDTV Live Hub

Music lovers can access MOG's entire catalog of over 11 million songs, nearly everything you'd find in popular music download stores, for free, making it the easiest way to enjoy instant access to music with no installable client application and no credit card needed.

ENGADGET: MOG FreePlay brings 11 million songs to the web gratis, makes you work for free tunes

Having never owned a Wii, owning a Wii U has given me access to an enormous back-catalog of titles like Xenoblade Chronicles, The Last Story, Skyward Sword, and Monster Hunter Tri to name a few.

FORBES: 'Rayman Legends' No Longer A Nintendo Wii U Exclusive

Game previews, reviews, guides and gameplay videos as well as 'Instant access' to game help walkthroughs and IGN's extensive catalog of popular shows, including "The Daily Fix, " "Strategize, " "Weekly 'Wood" and more.

ENGADGET: Xbox Live welcomes Vimeo and AOL On, boosts Verizon FiOS offering for Gold subscribers

Starting today, MetroPCS Android customers can plug into unlimited music with MetroPCS' new Rhapsody Unlimited Music service with access to more than 12 million songs in Rhapsody's vast music catalog.

ENGADGET: MetroPCS partners with Rhapsody to offer unlimited music in its rate plans