.pls FILEs WON'T Play

[DJ DOCTOR P]

Hello All List Members,
Just as the title says,.pls files won't play.
I sent one of my friends a .pls file via email.
She couldn't play it.
What could be causing this problem for her?
Thinks in advance.
  John.
To unsubscribe from this list, send a blank email to:
pc-audio-unsubscr...@pc-audio.org