Music on a keynote presentation?

If you are using PowerPoint:

http://office.microsoft.com/en-us/powerpoint-help/...

Add music or sound effects to a slide

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You can add music, songs, or sound effects that play:

Automatically when you display a particular slide.

When you click the sound icon on a particular slide.

Over one or multiple slides.

For more background information before you work with music, songs, or sound, see About music and sounds.

Add, music, songs, or sound effects

Display the slide to which you want to add music or sound effects.

On the Insert menu, point to Movies and Sounds, and then do one of the following:

ShowInsert a sound file

ShowInsert a sound clip from Clip Organizer

Double-click the sound file that you want to insert.

When a message is displayed, do one of the following:

To play the music or sound automatically when you go to the slide, click Automatically.

To play the music or sound only when you click the sound icon Icon image, click When Clicked.

To adjust the settings for when the sound file stops, click the sound icon Icon image, right-click, and then click Custom Animation.

In the Custom Animation task pane, click the arrow on the selected item in the Custom Animation list, and then click Effect Options.

On the Effect tab, under Stop playing, do one of the following:

To stop the sound file on mouse-click of this slide, select On click (the default).

To stop the sound file after this slide, select After current slide.

To keep the sound file playing for several slides, select After, and then set the total number of slides the file should play on.