How to play a couple of milliseconds of an audio file?

Hi all,

I'm new to the minim library. I've been searching the web and this forum but I can't find an answer to my problem:
Say I have an mp3 file of a 3 minutes. I want to play random 10 milliseconds part of that file every second. How do I approach this problem? So far I've only found how to play an entire song from setup()
Do I use a buffer of is AudioSample the way to go? Eventually I want to use a lengthy track, up to 60 minutes to grab parts from and play them.

Any help would be greatly appreciated. TIA, danielle.