How many can be used at once?

[actgi]

If you try to use a program on two players simultaneously, even if it is the same program, it will overload your brain. Everyone who has tried this has had the same result, and they didn't do it long. You cannot do this, at least not with my subliminals. They're too powerful.

When I say simultaneously in this sense, I mean as in playlist. You would use multiple programs but not be literally playing them all simultaneously.

Crystal Clear! Thanks