I need to do
some voiceover work, and I was wondering if there was an
application or a set of apps to do this with Linux.
Apart from Cinerella also Kino is definitely worth a try:
http://kino.schirmacher.de/
It's not a KDE but a Gnome programme, btw.
Kino, unfortunately, doesn't work on mpeg files, it'd still need to be
converted to a DV format like AVI or rawdv first.
--
Rule of Feline Frustration:
When your cat has fallen asleep on your lap and looks utterly
content and adorable, you will suddenly have to go to the
bathroom.