About video (sound) editing

[u2music]

I don't know is it right place to post this...
I have adelaide vcd (video+audio) and I have made better version of audio. So I want to replace original audio with new one without decompresing video. Video is in MPEG format.
Does anyone know in wich program to do that?

 

[The_Edge89]

Adobe Premiere perhaps?
I use it to edit videos