how do u make an audio track play all the way through a powerpoint presentation?

Question

not 2 start again on each slide

Answer 1

Play a CD during a presentation

1. Insert the CD into the CD-ROM drive.
2. On the Slides tab in normal view, click the slide you want the music to start playing on.
3. On the Insert menu, point to Movies and Sounds, and then click Play CD Audio Track.
4. Under Clip selection, in the Start at track and End at track boxes, set the starting and ending track number. (To play only one track or part of a track, put the same number in both boxes.)
5. In the time: boxes, set the starting time for the starting track and ending time for the ending track. By default, the start time is zero and the end time is the total number of minutes for the ending track.
6. If you want the music to repeat, select the Loop until stopped check box.
7. Click OK, and when prompted, do one of the following:
To play the music automatically when you go to the slide, click Automatically.
To play the music when you click the CD icon , click When Clicked.
Note If you choose to start the music with a mouse click, the CD icon will appear on your slide even if you've selected the Hide sound icon during slide show check box.

8. To adjust settings for when to stop the music: on the slide, click the CD icon , right-click, and on the shortcut menu, click Custom Animation.
9. In the Custom Animation task pane (task pane: A window within an Office application that provides commonly used commands. Its location and small size allow you to use these commands while still working on your files.), right-click the arrow on the selected item in the Custom Animation list, and then click Effect Options.
10. On the Effect tab, under Stop playing, do one of the following:
To stop the music on mouse-click of the slide, select On click (the default).
To stop the music after this slide, click After current slide.
To keep the music playing for several slides, click After, and then set the total number of slides the music should play on.
Notes

You need to insert the CD into the CD-ROM drive to play it during the presentation.
To change the settings for track number and start and end time, right-click the CD icon , and on the shortcut menu, click Edit Sound Object to display the CD Audio Options dialog box.

Answer 2

read up and see a demo here:
http://office.microsoft.com/training/training.aspx?AssetID=RC010713231033&pid=CR061832731033

Answer 3

and yet another good source