In PowerPoint you can insert audio and music. Sounds can be played in the background while you are presenting the Slides or you can also automate your presentation and add the speeches so when you hit the F5 button it will be played for every new slide.
There are three different ways to insert audio from the Audio menu.
First, you need to click Insert menu and then Audio. Here you will see a popup with the options.
Lastly, when you insert a sound clipart you can see the following icon.
This is very handly if you want to preview the sound before you start the presentation. Also you can trim the audio if you want to adapt it to your slide. In order to edit and trim the audio you can right click over the sound icon.