I have 2 sets of speakers, powered computer speakers with RCA outputs and for my home theater. Yesterday, I bought a new amplifier and changed the connection to the computer from optical to USB. I also have the computer speakers hooked up through USB. Since they're both hooked up via USB, they won't play at the same time. If I got a splitter for the mic jack, would that work? In other words, would I also be able to play my home theater speakers at the same time I was using the computer speakers? Thanks.