Earbits is not Last.fm but you will find some similarity. You can listen English audio songs as you listen in native player. You can browse and listen radio stations.
You can listen songs without login but after login you will feel the difference. Login is simple just sign in with Facebook. You can easily vote up and vote down songs. You can control volume, play/pause and next/ previous etc.
If you are not logged in you can listen music but after login you will see artist’s profile in detail. You also can share to your Facebook friends the song you are listening. But one thing is missing that is search box you can not search just browse.
Do not blame me if got addicted to it. You can also can by tracks on Amazon and iTunes.
If you are an artist you can submit your own music.