I have audio files that I recorded off the TV for my carCD.
They are Stereo recordings, but when converted to WAV they became MoNO.
They play on one side of the car only.

In AudaCity I note that they are on one track only.

How can I copy paste to second track and thereby have sound from all four speakers?

Or do I require "another recorder" program?

PS.
I thought I had a busted radio/CD, till I listened to another Stereo CD.