Any way to hook these speakers up?

I've got a built in speakers (bar) on my monitor (all in one computer), and I've also got a set of speakers that came with the wireless keyboard and mouse I bought. I want to move the speakers above and to the sides of my computer but also use the bar speakers that are built in. I realize without a surround sound sound card, I'm just going to get 2 lefts and 2 rights instead of a 5 way sound, but I'm just really looking to see how much sound output I can have by using both. I just don't know how to go about having them both working at once. P.S. No Y splitter, so other options would be preferred.