Crazy Powerpoint

Here's how to insert music or sound on a slide (from help). Powerpoint will embed the file in the presentation.

In slide view, display the slide you want to add music or sound to.
On the Insert menu, point to Movies and Sounds.
To insert a sound from the Clip Gallery, click Sound from Gallery, and then double-click the sound you want.
To insert a sound from another location, click Sound from File, locate the folder that contains the sound, and then double-click the sound you want.
A sound icon then appears on the slide.

By default, the sound will start when you click the sound icon during a slide show. To change how you start a sound?? for example, by positioning the mouse over the icon instead of clicking it?? click Action Settings on the Slide Show menu.

Good luck!

Go to the help file and type the word Sound.
MS has provided a very good description of how to add sounds to a presentation.
Go to Insert on the Menu bar and choose Movies and Sounds, then Sound from File. You can browse to your file location.

At this very moment I do not have an English PowerPoint available. So I will have to guess how the "translation" would be.
Make sure you are in the mode for one slide at a time.
Use Insert, Movies and Sound [or something similar] Choose probably from file.
A second screen will ask if this sound should be played automatically or when clicking on the Icon.
Use menu Slide show, custom animation? [The title must be something like this].
There you can specify for media whether the slide show should be stopped or may continue.
There is also a button more options to specify if the music should be repeated.
You can move the sound icon to another place on the slide.
This is for PowerPoint2000 and XP. Likely it is not completely different in 98.
Good luck.

Goto insert>movies and sounds> sound from file
then select your sound file and set the properties.
Then when you are ready to give your presentation goto file pack and go. this will embed the files.