kget depends on kde-runtime, which in turn uses phonon to offer an unified
sound interface to the kde applications.
The default backend for phonon is phonon-backend-vlc, which depends on vlc (it
could depend on vlc-nox), but that's not the only backend available, you can
use phonon-backend-gstreamer to use gstreamer or phonon-backend-null if you
want no sound.
To do that you could do:
apt install kget phonon-backend-vlc- phonon-backend-gstreamer
This tries to download 193 MB of packages in a clean system
apt install kget phonon-backend-vlc- phonon-backend-null
This tries to download 183 MB of packages in a clean system
And it can be reduced about 40 MB if you don't install the recommended packages.
Happy hacking,