Need help with fixing a sound issue while recording a game

OK so I've been talking to Terry about this but no luck, so he said I could try and post the issue I showed him which is this.

http://www.mediafire.com/download/bada5cii0yfkmyg/test.avi (Never mind the lag keep in mind I talked with Terry and used the settings he gave me also might wanna lower your vol)

I messed around with the settings and even closed all tabs but the sound still does that, does anyone know anyway to fix this? The codec I been using is Xvid MPEG-4 (also tried Lossless Codec and even Microsoft Video 1) once I had CFE at 6000 and it ran "perfectfully" only issue...yeah no video just a still frame I try to keep the SKFE at 200 the CFE and PBR I messed around with a lot but that issue in the video above keeps happening the settings "changes nothing" even when my broswer closed it's still giving that sound issue.

I use Camstudios 2.6B, do I have to redownload it or can anyone help? If you use Camstudio to do Let's Plays then please try to help as I really wanna do those but this sound error is just...ugh. XD

EDIT:I forgot to say that I don't have Stereo Mix on my PC which is Windows XP, sorry I forgot to say that and the emulator I was using is visual boy advance-m.