Hi all, I created a PP presentation of photographs and text with music playing in the background (mp3 file)

When I had finished adding all of the stuff I wanted, I rehearsed the timings because I wanted different slides to start at different points in the music. When I had done this and my music/slides were perfectly synched, I went ahead and made a CD presentation.

I took the disk into work to show a colleague and the timings were OK for the first slide and then they would get progressivly worse. The 2nd slide was 2 seconds off, the 3rd 3 seconds off and so on and so forth. I tried it in my laptop and the same thing happened. I went back to the original machine and re-created the CD presentation but I got the same results on 3 different machines.

All machines are P4's 2.6Ghz or higher, 1Gb Ram (Or higher) - what am I doing wrong?