I'm glad people are onto this option. The only way I've found around this, and I've only done this with the one video because its far too time consuming. Is to play the video in windows media player where it plays both the game sound and your voice and then record that using the rectangle capture option in Bandicam, then its all mixed in as one track, then upload to youtube and it works. Or try with Sony Vegas if you got it, which I dont.