Help overlay VCD audio left/right channel

[ChowYunFatFan]

I have VCDs with dual language (e.g. left=Mandarin, right=Cantonese). I'd like to overlay one channel with the other, replacing one language with the other. Are any tools available to do this?

Thanks

[Shabubu]

It's in the spec to have two audio channels, but I think you have to do it in something like Philips VCD Toolkit or I-Author. Unless you want to have both channels in the same language, then just split your channels using something like cooledit, and then convert you mono audio back to stereo.