[cbcsteve]

I remember one time there was music on during a game at TTAC for a CQB lights out skrimish, with music it masked the players footsteps so it was hard to tell whats going to happen next, it all depended on your reflexes and if you had a flashlight.

But other than that music in games is definitely a distraction you can try it at Defcon and you will notice right away that it can be quite distracting