[Soymilk]

i just got an elite pro and i like having both my speakers (2.1) and my amp plugged in at the same time so i dont have to switch the plugs when i want to switch which one i'm using. is there a way to do this? there are three line outs, but 2 and 3 only get used for 4/5/7.1 setups; if you have it on 2.1 or headphone they don't do anything. is there a way to change what the ports do, or would i be better off using a splitter out of the first port? that should be fine right, since all i need is the signal, then my amp gives power for my headphones and my speakers are powered by their own thing as well?
 
thanks