Audio filters work in much the same way as video filters except you don't need to select overwrite or create options. There are only a few audio filters and transitions but they're useful for basic editing.
Their titles describe their function so explanations aren't really necessary. Dub means that the original audio will be replaced with the selected audio file. Firstly select your clip, Preview then Render. If you wish to replace the whole audio with a single audio file then render your movie first, import this into a new project and dub the clip. For more advanced audio editing export your audio file and edit in a sound-editing programme such as Audacity.
If you want to add external audio files to Kino these should be in the 'wav' format.
Images of audio transitions and audio clips.