Audio
Presenter ‘09 offers all sorts of easy-to-use audio features. Not only can you record narration for your presentation right within Presenter, you can also import audio that you’ve recorded elsewhere, add background audio to your course, and more. See these tutorials for details:
Recording Narration in Presenter
Recording Narration Across Multiple Slides
Importing an Audio File into a Presentation
Importing Multiple Audio Files into a Presentation
Reusing Audio from One Presentation in Another
Creating a Backup of Your Presentation's Audio Narration
Adding Background Audio (Playlists) to Your Presentation