Open Settings
Go to System
Select Sound
Choose your output device
Open Device properties
Check for Left/Right channel balance settings
Adjust the balance sliders if available
Open Control Panel
Go to Hardware and Sound
Select Sound
Open the Playback tab
Right-click your audio device
Select Properties
Open the Enhancements or Advanced tab if available
Look for channel swap or balance options from the device driver software
Open your audio interface or sound card control app
Enable channel swap or reverse stereo if supported
Use third-party audio software with stereo swap or channel inversion
Use an audio editor to swap left and right channels for a file
For live audio, route audio through software that supports channel mapping
Restart the audio app after changing channel settings