Thanks for your quick reply, Mike. Yes, there’s waveform in the timeline display in both stereo channels. I did not record the audio, it is a mp3 track I copied from a CD. The Fill Left or Right effect does’t help as well. It plays perfectly well in both channels while in the timeline or when it is exported as mono settings. Only when it is exported in stereo settings, the audio will pan to left and there will be no sound in the right. Is this a rare problem that i encounter?
Thanks again!