I have inserted a song into the first slide to play
throughout the presentation. The problem is that my
slides will not advance as long as the song is playing.
Once the song is over, the slide show continues. I
clicked on 'play automatically', but the slides will not
advance during the song.

Assume you're using PPT 2002, right?
See http://www.rdpslides.com/pptfaq/FAQ00047.htm

--
Echo [MS PPT MVP]
http://www.echosvoice.com

JLE wrote:
>
> I have inserted a song into the first slide to play
> throughout the presentation. The problem is that my
> slides will not advance as long as the song is playing.
> Once the song is over, the slide show continues. I
> clicked on 'play automatically', but the slides will not
> advance during the song.