adding audio tracks to an avi/mpg

[reddragon72]

I have a couple video's that I converted over from my camera. well I didn't pay attention to the volume of the mic input and recorded the sound to low. I had already converted the avi files to mpg using tmpgenc so I stripped the audio with virtualdub. Well now I have fixed the audio, but when trying to put the audio and video back together using tmpgenc is want's to convert the mpg again. I'm afraid this will hurt the video by recompressing it. Is there another program that will just put the audio file back onto the mpg file without recompressing the video again?

[chasmanian]

use tmpgenc. file->mpg tools->simple multiplex