Hi, I'll be teaching you how to convert any file's extension. Okay, so let's start by going to your file. I'll go to mine as well. Alright, so in this example, the file is a video with the extension .mp4. Now, to change the extension, go to the "Organize" folder and select "Search options." Then, go to the "View" tab and uncheck the option that says "Hide extensions for known file types." Once you've applied these changes, press "OK." Now, you'll see the file's extension appears. Let's rename it and change it to .mp3. Confirm the change by pressing "Yes." Congratulations! You have successfully changed the extension of your file. If you want to revert it back to .mp4, simply rename it again. I hope this explanation has helped you. Alright, let's summarize the steps: 1. Go to the "Organize" folder and select "Search options." 2. In the "View" tab, uncheck the option "Hide extensions for known file types." 3. Press "OK" to confirm the changes. 4. Rename the file with the desired extension (e.g. .mp3). 5. To change it back, follow the same steps and rename it with .mp4. That's it! I hope you found this guide helpful.