1. Open iTunes and when playing a song, there is only the random play icon at the top

2. Click the icon in the upper left corner and choose to display the menu bar

3 , after the menu bar is displayed, find Control

4. Find Duplicate under Control, click the triangle symbol on the right

5. Pop up Off, All, One Song, and select one < /p>

6. The single loop symbol will appear on the page, and the iTunes single playback setting is complete