Record the narration using Slide Show | Record Narration. (I wouldn't use
Rehearse Timings in conjunction with Record Narration.)

Then add the music background to the presentation separately using Insert |
Sound | Sound from File. I believe it will need to be an MP3, not a WAV,
because your narrations will be WAVs. On the Sound Tools Options tab that
appears when you select the sound icon on the slide, choose Play Sound |
Play Across Slides.

--
Echo [MS PPT MVP] http://www.echosvoice.com
What's new in PPT 2010? http://www.echosvoice.com/2010.htm
Fixing PowerPoint Annoyances http://tinyurl.com/36grcd
PowerPoint 2007 Complete Makeover Kit http://tinyurl.com/32a7nx



"Geo" wrote in message
...
Hello all,

I need to record myself over a PPT but would like background music playing
at a lower volume than me speaking.

How can I do this with PPT 2007?

Sincerely,
Geo