create-sound-files: recompute duration if --force is given

emissions/management/commands/create-sound-files.py

@@ -63,7 +63,7 @@ class Command(BaseCommand):
                     created = self.create(soundfile, format)
                 if created or reset_metadata:
                     self.set_metadata(soundfile, format)
-            if not soundfile.duration and os.path.exists(soundfile.get_format_path('ogg')):
+            if (force or not soundfile.duration) and os.path.exists(soundfile.get_format_path('ogg')):
                 cmd = ['soxi', '-D', soundfile.get_format_path('ogg')]
                 soundfile.duration = int(float(subprocess.check_output(cmd)))
                 soundfile.save()