GMusic-Desktop Client for Google Music
This program makes Google Music a lot easier to use! If you are like me and frequently have the need to skip a song or pause momentarily, then this client will enable you to do this from your desktop instead of navigating to the correct tab and finding the skip or pause button.
The client functions by displaying a small semi-transparent movable button overlay on your desktop that allows you to skip, play and pause at your whim. It's open source and fairly stable, check out the link below!