Hello, I have bought the ii-V-I compendium. It has a user guide, but I don't know what to do with it.

For example, I there is a pdf "C Major-minor.pdf"

line 1 has 4 bars: Dm7; G7; Ctriangle7; nothing

lots more lines with the same pattern.

I also have mp3s:

ii-V-I 4 bar phrases C Major (Concert Bb).mp3

ii-V-I 2 bar phrases C Major (Concert Bb).mp3

My question is: How do the mp3 and the pdf go together? What chords are on the mp3?

What do I with this?

Sorry to be so dense.