I just downloaded the most recent version (15.02.02) of Shotcut video editor on Xubuntu 12.04.
Usually you just extract the .tar.bz2 archive and double-click the "Shotcut.desktop" file to start it.
In my case, nothing happened. It didn't start, but it also didn't show any error messages.
So I started it manually and got the following error:
The package "libpulse0" was definitely installed...bin/shotcut: error while loading shared libraries: libpulse.so.0: cannot open shared object file: No such file or directory
[SOLUTION]
My bad! I tried to start the x86 (=32bit) build on a 64bit machine
I wrote this down here, because the error message about the missing library was a bit misleading and almost got me searching in the wrong direction