The song needs to be a compressed wav file.
You can compress using Cdex
Open Power point
Click Insert
Click Movies and sounds
Click sound from file
Browse and add song
Click automatically
Right click the sound icon
Click custom animation
Click song name then arrow
Click start after previous
Click arrow again
Click effect options
(Effect tab) In stop playing section add dot to stop and change to 999
Click the Timing tab. To play automatically, the
timing should be set to Start After Previous with a 0-second delay.
On the Sound settings tab, add check to hide sound icon during
The slide show
Click OK to close the dialog box
In tools, options general tab, link sounds with file size greater than, insert 50000
To set up the presentation, click slide show
Click slide transition to set up the slide show
Divide the amount of slides into the length of the song to equate the length for each slide
Speed-Your choice
Sound- (No sound)…Song will still play
Remove check On mouse click
Check automatically (Add the time for each slide)
Click apply to all slides
Hint: If you are trying to synchronize a song with the slides
and you find that the song is still playing when the slides end, just add the
last slide again