Switching Audio Signal? (L -> R, R -> L)

[MarioRPG]

Hey so I recently bought some speakers and with the way my physical set up is, I have the left speaker on the right side of my desk and vice versa.

This is due to the fact my tower is below my desk on the left side, and for some reason the manufacturers made it so everything must plug into the R speaker (ie, audio plug, subwoofer line and left speaker line and ac out). So pretty much my sound is reversed.

Is there any piece of software or anything so I can switch signals? It's weird for when I'm playing a game and someone shoots at me from left and I have to turn right.