sudo add-apt-repository ppa:scopes-packagers/ppa<br/>sudo apt-get update<br/>sudo apt-get install unity-scope-grooveshark

Then log out and log back in.

According to David, there are a few known issues though, such as :

• the results open in different tabs and aren’t enqueued
• results in the local collection are not deduplicated
• some searches don’t display any results due to some encoding errors
• sometimes cover art isn’t displayed the first time you search for something