Tools: Lenovo laptop e460, Windows 10 system, ppt20 17.

1. Open the PPT to which you want to add music, click the Insert option in the toolbar above with the mouse, and then select Audio. The inserted audio can be selected from PC or recorded audio. It is common to choose audio on PC, and MP3 format is usually selected for file insertion.

2. If recording is selected, the settings for recording will be displayed in the pop-up box after selecting the corresponding option. Here you can modify the name of the recorded audio, and then there are three buttons to click: the triangle button to play, the square button to stop recording, and the red circle button to start recording. After confirming the recorded audio, click OK.

3. If the background music is too long or the beginning part is unnecessary, you can check the audio, that is, slide the green slider to the position where you want the music to start, and then click OK. At this point, the unnecessary audio has been cut off.

4. After 4.PPT background music is inserted, the choice of audio style is very important. You can choose "no style" or "background play". In this way, when PPT plays to the page with audio plug-in, it will start playing music, and the subsequent pages will always be accompanied by music until the music is played. If "no style" is selected, you need to play music manually when playing PPT.

5. If you want to make the background music and PPT content blend better, you will generally edit the audio "fade in" and "fade out". Adjusting the fade-in time is the time it takes for the sound to go from 0 to normal when music starts playing, and the fade-out time is the time it takes for the sound to go from normal to 0.