How do I change audio to stereo in Premiere?

To convert mono audio to stereo in Adobe Premiere Pro, follow these steps to duplicate the mono track onto both the left and right channels:

1. Select the Mono Audio Clip: In your timeline, select the audio clip you want to convert to stereo.

2. Modify the Audio Channels:

   • Right-click on the audio clip in the timeline.
   • Choose "Modify" then "Audio Channels."

3. Change Channel Format: In the "Modify Clip" window, look for the "Clip Channel Format" setting. Change the preset to "Stereo."

4. Ensure Left and Right Boxes are Selected: Make sure that both the left and right channel boxes are selected (or checked) so the mono audio is copied to both.

5. Press OK: Click "OK" to apply the changes.

6. Verify the Change: After these steps, you should see that both left and right audio levels are displaying activity, confirming the audio is now in stereo. You should also hear the audio equally from both the left and right speakers.

This process essentially duplicates the mono audio to both the left and right channels, creating a stereo effect.