Open WPS, insert background music, select the music file to be inserted, select the edit music object, and finally slide show.
The steps are as follows:
Open WPS and click Insert-Background Music.
Select the music you want to insert.
Then a small speaker appears in the lower left corner of the PPT.
Right-click the small speaker and select Edit Sound Object.
The default is loop playback.
Click Slide Show-Set the show method.
Tick before looping the show and pressing the ESC key to terminate it.
Click the cup-shaped icon in the lower right corner to enter the automatic slide show.
Reference materials
Tianji.com. Tianji.com [cited on 2017-12-31]