I know you can turn itunes up/down using Ctrl+Arrow up/down but it doesnt work when its not the active window. i cant turn my volume down using Dinova keyboard because i'm using Toslink which doesn't allow you to turn it down. Setup - Imac -> 3.5mm to Toslink - > DAC -> Amp -> Speakers what i want to do is Turn down itunes whilst playing TF2! any ideas? i tried adding a keyboard short to - & + keys it didnt work.