So I finally got a presentation I can live with except that I needed help
with the music timing of the first 3 slides.  An IT person where I work came
over to help me.  He copied the first 3 of my slides over to a totally new
presentation and reset the music timing--as well as to completely change the
song.  I guess he thought I could take it from there.

But he was wrong.  I have failed miserably at copying the remainder of my
slides over to his new presentation.  I thought that he had set his slides to
play throughout the whole presentation and that mine would just fall into
place after I copied mine over.  I was wrong!!  The whole presentation just
stopped after his 3 slides even though mine had been copied to follow his.  

I can't tell a thing about his timing because he has used a timeline instead
of the way I had been doing it.

Now that you're aware of how little I know, can you suggest a way that I can
copy my remaining slides into his presentation so that his timing and song
change will prevail throughout the whole presentation, or how I could copy
his onto mine?  I'd have him tell me himself except that I won't be in touch
with him for the next 4 days and I desperately need it within 24 hours!  
Thanks so very much!