I'm evaluating SSC for a presentation that I'm giving in 2 weeks. I have a question about timing of music.

The presentation is a series of pics that my daughter and friends took while on a recent trip to Australia. There are over 200 slides, and I want to have a series of music tracks played over the total of the slideshow. However, I want the music to change on an every "n" slide basis. That is, I want to have 10 slides to 1 music selection, the next 20 slides to another, and so on. I don't see an obvious way to do this. Is it possible?

Thanks,

Bo