Even after you've uploaded your video to YouTube, it's not too late to do something to enhance its appeal. For example, you can use the Video Editor tool to add music from YouTube's large library of royalty-free music to videos with no audio, or replace your existing soundtrack with something more appropriate. You can't use the Video Editor, however, to add one song on top of another or on top of your video's original soundtrack.

Using Video Editor

Step 1

Sign in to your YouTube account. Click "Upload" and then the Video editor "Edit" button.

Step 2

Select the video you want to add music to.

Step 3

Click the "Audio" button to display the list of tracks you can select from. You can also search YouTube's library for more appropriate tracks. For example, if you want blues music, type "blues" in the search box and press Enter.

Step 4

Click and hold the mouse button on the track you want to use and then drag it to the box labeled "Drag audio here."

Step 5

Release the mouse button once you see the blue border around the box.

Step 6

Move the slider beneath the video to the left if you want to lower the music's volume.

Step 7

Click the "Publish" button to save your changes.

Using the Video Manager

Step 1

Click your YouTube account user name and then the "Video Manager" button.

Step 2

Click the "Edit" button next to the video you want to add music to.

Step 3

Click the "Audio" button.

Step 4

Select the music you want to use from YouTube's featured tracks or search through the archive for a song that more closely matches your video's content.

Step 5

Move the slider beneath the video to the left if you want to lower the music's volume.

Step 6

Click "Save" to make your changes permanent