Spotify joined Facebook yesterday at f8 to talk about its new Facebook integration. While, there, CEO Daniel Ek reportedly said that Spotfiy will no longer be invite-only in the US, and that unpaid users will get six months of free service. Users will have to use Facebook to bypass the invite system, a Spotify community manager is quoted as saying.

“Spotify users who connect to Facebook listen to more music on a weekly basis. They also listen to a wider variety of music,” Ek said on stage.

“We have over 400 million playlists to back that up,” he added. “They’re also more engaged and more than twice as likely to pay for music.”

Spotfiy talked about the Facebook integration on its blog, providing the following video:

“You’ll now start seeing new music posts and play buttons all over your newsfeeds,” Ek explains on the blog. “Hit a play button and the music starts. Right there. Spotify fires up to give you a new soundtrack to your social life. Check out your new Music Dashboard and your real-time ticker to discover the music that’s trending with your friends.”

“This integration with Facebook will help everyone to discover more free music than ever before,” he adds. “Thanks to our unrivaled, truly free service, users can just hit play to enjoy the music, no hassle, no gimmicks; month after month after month.”