how to pause sound?

[Av23]

what the title says... how do you pause or stop a sound file from play?
i already read the small tut on the website (music in stage), and was useless.

eg.

i have a 5 min sound file

stage 1-1
play from start to 1 min, repeat

stage 1-2
continue play to 2 min. then when it reaches the 2 min mark, repeat from 1 min.

stage 1-3
continue play to 3 min. repeat from 2nd min.

etc.

press F4 = sound stop, then exit to menu


how can i do this? or is it even possible?

thanks for your time.