Pan the audio to left or right
This is a free web tool that allows you to pan an audio file making it play more from the left channel or from the right channel.
Set Pan to -100 for hard left, 0 for center, or 100 for hard right. Preview with headphones to hear the position. For repeated movement between sides, use the Auto Panner.
This is an example of an audio file that has been shifted 80% to the right.
Before