Click Insert-Movies and Sounds-Sounds in Files. Select the file you want to use as background music in the Insert Sound dialog box that appears, and then click OK. Click the "Automatic" button in the pop-up dialog box to insert the music object.

In PowerPoint, there are still some differences between presentations and slides. What PowerPoint makes is called a presentation, which is a file. Each page in a presentation is called a slide, and each slide is an independent and interrelated content in the presentation.

It can be used to express the content more visually, and charts and words can be presented clearly and quickly. You can insert rich content, such as pictures, animations, notes and handouts. The commonly used softwares for making electronic document slides include Microsoft Office Software, Apple iWork Software and Google Document Online Office Software.

relevant information

The so-called online slide show is to read common electronic documents such as ppt, pptx, pdf, word, odf, dpt, key online through web technology, which avoids the trouble of installing software. Another advantage of online slide show is that it doesn't need to carry a mobile storage device with you, as long as there is a device with internet access, you can make slides.

So you can go out to give a speech and stay away from the threat of computer viruses. Online iWork suite in Apple iCloud cloud, Microsoft Office Web Apps and Google Docs all provide online reading and editing of slides. Common online slide platforms include Slide share abroad and Baidu Library Phantom Network of Slidesboom in China.