This simple tutorial will explain how to install Clementine and Rhythmbox scopes for Unity music lens. The scopes will allow you to browse your music library and directly play a song/album form Unity dash (the Clementine scope for now does not show album art).
Hit Ctrl+Alt+T to launch a terminal window, to install Unity music lens, run this commands:
sudo apt-get install unity-lens-music
To install Clementine and Rhythmbox scopes, add this ppa:
sudo add-apt-repository ppa:markjtully/ppa
Then update and install the scopes:
sudo apt-get update
sudo apt-get install clementine-scope
sudo apt-get install rhythmbox-scope
The scopes will work at next log in.