Sound on both channel fix possible on mpg and wmv?

[Blå_Mocka]

Im trying to fix the audio track on some video files, to get sound on both sides/channels
I got and used this instructions earlier from a old thread on this forum

"Open the avi with Goldwave.
Copy the left to the right channel or make it mono.
Save as wav or mp3.
File->Save as and select Save as type: MP3 and select Layer 3 128kbits mono under Attributes.
Use virtualdubmod to add the new audio to the avi file under streams->streams list.
Select Video->Direct Stream Copy.
Last File->Save as a new avi."

Now i have two Mp3 Layer 3 128kbits mono tracks extracted with both channel audio
But this time its instead from MPEG and WMV-files who require the channel fix
is there any programs compared to Virtualdubmode who can handle this formats and can perform this?

[Baldrick]

I guess you can add mp3 audio to a mpg using tmpgenc(under file-->mpeg tools->simple multiplex). Or convert the mp3 to mpa/mp2 or ac3.

For your wmv I would try wmvmuxer and add the old wmv and the mp3. Or use Windows Movie Maker.

[Blå_Mocka]

I guess you can add mp3 audio to a mpg using tmpgenc(under file-->mpeg tools->simple multiplex). Or convert the mp3 to mpa/mp2 or ac3.

For your wmv I would try wmvmuxer and add the old wmv and the mp3. Or use Windows Movie Maker.

The Mpg is now fixed with TMPGEnc

Windows Movie maker is not a bad idea for the wmv, the only issue i experience there is that this file is on 815 Mb, 1 hour 20 min
since Movie Maker are cutting up inputs into mini-bits, that brings me about 150 small audio tracks in a row ..that i must add silence to manually before i can save out a test..i dont know if its possible to gain control over the whole audio as a unbreakable single track?

So perhaps i must go with WMVMuxer instead, its just that i dont know which settings to choose in the main window
Format/Profile, and its required to be filled to start encode, i want a direct stream copy, the manual speaks of something like that..but related to some Lame encoder i think, i can only handle program-buttons really, klick direct stream copy :9 what thei talk about i dont understand