Please discard the first patch and consider this updated version. I was
able to identify a timestamp and remove it, make the build reproducible.
Also, I have added all the licenses to the best of my ability, by which
I mean I ripped off the debian package. Praat looks messy but it's fun
software. For example, you if you are learning a tonal language, you can
import recordings to have it show the contours and see how they differ
from the idealised textbook versions (quite a lot!) --
http://www.sinosplice.com/life/archives/2008/01/21/seeing-the-tones-of-mandarin-chinese-with-praat