1) Copy all files in the '/_dstwoplug/' into the same folder on the DSTwo 
2) Download TunaVid files from http://chishm.drunkencoders.com/tuna-vids/tuna-vids-1.1.zip
3) Extract 'tuna-open.nds' into the '/_dstwoplug/' folder
4) Extract 'tuna-vid.nds' to the ROOT of the DSTwo card

Please note
Tuna-viDS plays videos with the following format:

    * Video: 256px wide, up to 192px tall, up to 12fps, Xvid encoded, non-interlaced
    * Audio: Stereo or mono MP3
    * Container: AVI with chunk index, video must be the first stream (fourcc 00dc)


