Just two months after hitting the US in an invite-only beta, Spotify is now open to to the public and is offering users 6 months worth of unlimited streaming under the free account.

Stream millions of tracks from thousands of albums and artists to your iPhone, iPod Touch and iPad. Take your existing Spotify playlists with you on the go – listen to them during your commute, in the gym or on a flight. With ‘Offline mode’ you can listen even when no connection is available. Wirelessly sync your local files to your phone to merge your catalogue with ours, no cables required! Download and get started directly from your mobile.

  • Instant access to over 15 million tracks
  • Stream online
  • Listen offline – no mobile connection needed
  • Share music with your friends
  • Star your favourite tracks
  • Wirelessly sync your own MP3s to your iPhone, iPod Touch & iPad
  • Create and sync playlists
  • Send the tracks you listen to direct to Last.fm & Facebook

Spotify is on a role right now, as just yesterday they partnered up with Facebook to allow free streaming on the social network from user profiles at no cost.

I've been in the invite-only beta since it launched in the US and have been loving it, although I can't see myself spending the money for a premium account just yet given my loyalty to iTunes and iCloud. Spotify is still one of the best online streaming music providers out there, however, so give it a try and let us know how you like the service!

Spotify is available for Free for iPhone and requires a free Spotify account. There are also premium and unlimited accounts available starting at $4.99 per month.

[App Store Link] [Spotify]