Well, the install script should put everything in it's place. Your problem is that the "scribe" binary executable isn't in the PATH.
Verify that scribe has been installed to /opt/nch/scribe/bin
You should find the "scribe" executable and the uninstall script.
Simply type: ./scribe to run the program from the aforementioned folder.
To make Linux remember where the "scribe" command is, either add the /opt/nch/scribe/bin folder to PATH. (Not recommended)
OR
just create a hardlink from the binary to a folder that's already in PATH, like /usr/bin
So:
sudo ln -n /opt/nch/scribe/bin/scribe /usr/bin
Now pop open a start program window with ALT+F2, and type scribe. Or use the terminal. It should work fine now.
... Unless you have a cheap Intel audio card on your laptop, in which case you'll see the following whenever you "Fastforward or Rewind"
"ALSA lib pcm_hw.c:1401:(_snd_pcm_hw_open) Invalid value for card"
"Segmentation fault"
Awesome. After extensive googling, I can report that this is an open issue dating back to 2009. Nobody's solved it yet, so you might wind up stuck with WINE, laggy though it may be.