bring the music file to the CD or Flash drive. Unless the music is a WAV file, you can't embed it, only link to it. If the music file wasn't in the same folder as the PowerPoint file, you'll need to start from scratch -- move it to the save folder and re-insert it. Otherwise, just make sure that you move the music file with the PowerPoint file. Regarding why the slide presentation doesn't advance, I'm not sure -- I'd have to see it, but I would guess that it's related to the music file. Open the Animation Pane and check the order of the animation. Inserted sound adds an animation event, although many people don't realize it, so inserting music can stop other animation from happening. you should adapt your photos to the resolution of the projector! so instead of random dropping large picturefiles to your presentation, first adapt the resolution (eg 1024x768) then save as jpeg (high quality) and you should immediately save a lot of space. "I just became a better PowerPoint user! This is great!" - Lester L. Stephenson Outstanding presentations! You'll find free tips, techniques, articles, and tutorials here, all designed to give you the knowledge you need to succeed when you present. I'm passionate about turning Death by PowerPoint into Life by PowerPoint. Discover books and courses to help you become an outstanding presenter. Find out more about training, consulting, webinars and coaching on presentation skills and PowerPoint.