Audio in one ear

[Akime]

So i recorded a vid and i could hear the mic audio but not the game audio in Movie maker. So i did some research and found out that i had to use AVIMux. So i did so. After it was complete building, I opened it up in Windows Movie Maker. I now have audio from the mic and game but i cannot hear it in the left. All the audio is going to the right. HALP MAH