error: Input not stereo

[bryant]

I did read your post (or i wouldn't have responded), apparently, I did not understand.

I have some audio editors and still did not know how to
make a mono file to a stereo file. I'll have to experiment, I guess.

I think the reason why I brought up songverter is the fact that you used the word "conversion" in your explanation, and that is what songverter does (convert).