[pinpoint] Open multiple presentations

[Garrett Hopper <garrett garretthopper com>]

Is there a way to open multiple presentations and have them seamlessly
flow into eachother? The use case is that I have many song lyric
presentations, but the order of songs is different everytime.
e.g: pinpoint song1 song2
Or maybe there is a way to 'cat' the contents into pinpoint through
stdin?