I'm glad you liked the song!!! You are one of the few who liked it!!! (Other people thinks that is annoying...) =D
The colored squares are virus and, like you already figured out, they made you lose points. You have to click him away the numer of times written on the cube. At the moment they'reTOO annoying and TOO fast.
Their power increases with the progression of the game. You can decrese this power a little (and reducing their life points) by purchasing the Antivirus power up. This powerup really comes in handy, expecially as they are now, but be careful not to buy it too many times, or you won't have enough power to overflow... ;)
Thank you for playing and enjoying my game!!! A big WOWIEEEE to you, too!!!