You can use transition if you want to give your slides some effect. Slide transitions are the animation like effects that occur when you move from one slide to the next. You can control the speed, add sound, and customize the properties of transition effects as shown below.

Once you click on the transition tab, you can select the effect that you want from the transition gallery. Click this to see the different types of transition available. Click the type of effect you want for each slide. You can click on preview to see the effect you have selected for each slides. To set how fast or slow you want the transition to go, enter a time in the Duration box. Set the number higher to make the transition go slower. You can also set the time for After... depending on how long you want the slide to stay for before moving to the next slide.

At this point, you can decide to add more slides, or change your slides around.

Next...add your music. Have your audio ready? If not, thanks to Loes amazing training we have this covered Add royalty free music to your website, slideshows and videos...Thanks Loes.

Once you have downloaded your music, save it in a folder in your computer. Next...click on insert and then click on audio as shown below.

Next save your work...click save, then save as "Window Media video"

Change the save as type to "Window Media Video"

Take note of where you are saving your work...mine indicates Local Disk (C). You can decide to change it at this point.

Next: Once you are happy with the timing of your music and video...then you are ready to upload your video to Youtube