Sometimes when MP3s are downloaded or imported to Windows Media Player, the song title does not appear correctly. Fortunately, Windows Media Player offers several advanced editorial resources that you can use to manually enter specified information, including subtitles, for individual MP3 files. Adding a subtitle to an MP3 file in Windows Media Player takes just a few seconds.
Open Windows Media Player.
Click the "Library" tab at the top of the program to view all of the MP3 files available.
Locate the MP3 to which you want to add a subtitle. (If the MP3 song does not appear in the Library, see the Warnings section.)
Right-click the MP3's current title, and then click "Advanced Tag Editor." The Advanced Tag Editor dialog box appears, showing additional editorial resources that you can use to edit the file information.
In the "Title" text box, replace or edit the existing text to include the subtitle in parentheses following the title.
Click "Save" at the bottom of the Advanced Tag Editor dialog box to save the new subtitle to the MP3 file.
Before you can edit the title of an MP3 song, you must import it to Windows Media Player. If the song is not imported, you will not find it in the Windows Media Player Library. To import a song, click “File” on the Windows Media Player menu, and then click “Manage Libraries.” Select the folder on your computer in which the MP3 file is stored, locate and select the MP3 file, and then click “Add.”