I have my guitar connected to my connector via audio cable from guitar to pedal, then audio cable from pedal to line in of computer. The problem I have is that the sound only comes out of one speaker or the left side of my headphone. I also tried connecting the audio cable to the mic in. Still the same. How do I get the sound to come out of both speakers or both sides from the headphone? It's weird because with my bro's computer, I can hear sound from both speakers, using the same cables and stuff.