Gaming editing keyboard shortcuts for itunes

[Gh0sti]

ok my keyboard has already the play/pause button, fast forward and rewind keys on the keyboard they are apart of the function keys, now when i have itunes minimized those keys dont work, i always have to have the window open to use those keys and i want to use them when itunes is minimized, how do i change that or edit this so i can use the keys? im on win 7 32bit, latest itunes