In vlc folder, you have a file names npvlc.dll
Just copy it in plugins folder under k-Meleon
Generally, plugins for mozilla are named npxxxx.dll where np means Netscape Plugin
It's for example the case for orbitdownloader, freshdown, and many more.
Sometimes, installations declare it for Mozilla, and as K-Meleon is declared as Mozilla browser, it works directly, sometimes, you must have the plugin dll (and sometimes more) in k-meleon plugins folder (warning, not kplugins folder)
A+
Mozilla/5.0 (x11; U; Linux x86_64; fr-FR; rv:38.0) Gecko/20100101 Ubuntu/12.04 K-Meleon/76.0
Web:
http://jujuland.pagesperso-orange.fr/
Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc