The differences between tiers - Unlimited is better quality, has an offline mode, and allows full cell phone access. And you need to sign up for an invite to access the free version - which I've done, so we'll see.
THE TOP SELLERS 1. Kiss Each Other Clean (The W at Amazon) Iron & Wine (Warner Bros.) 2. 2011 Grammy Nominees Various Artists (Jive) 3. Mission Bell Amos Lee (Blue Note Records) 4. The Party Ain't Over Wanda Jackson (Nonesuch) 5.