Do you want 'Soundcloud style' plugin or Soundcloud plugin itself to stream from soundcloud?
For soundcloud widget (stream from Soundcloud): https://soundcloud.com/pages/widgets
For soundcloud style, there's none that matches it 100%. But there are a lot of MP3 players that you could use. 2 of them I recommend:
JW Player: http://www.longtailvideo.com/
Europe, Middle East and Africa