There is no configuration tab for this player in KMPlayer's config dialog.
Everything must be configured by manually editing the
~/.kde/share/config/kmplayerrc like with configuring the
backend per mimetype. This is an
example how to let flash be played with the swfdec-mozilla plugin:
[application/x-shockwave-flash] player=npp plugin=/usr/lib/mozilla/plugins/libswfdecmozilla.so
In order to let KMPlayer play flash in HTML pages, you should make the
KMPlayer plugin the service provider for the
application/x-shockwave-flash mimetype in KDE's
File Associations configuration dialog.
As in the above example, this player configuration name is