Whenever i turn on iTunes to listen to music and walk away to do some chores my computer goes to sleep. Yes i do have my energy controls set for the monitor to sleep after 15 minutes of no activity...but i consider playing iTunes activity. How can i prevent my system from sleeping while the computer is running iTunes? Im sure apple realizes that people might want to run iTunes and use the cool "Visualizer" video effects...with this in mind why would the monitor sleep while "Visualizer" is running? is there a way around this without turning off the sleep option in the energy control panel?