This forum is for discussion of included Plugins and Viewers.
Viewers are listed in the file viewers.config and handle things like playing gameboy games, or running MIDI files. Basically, any time you click on a file, and a program runs to handle it (other than music files, and playlists) you are using a viewer.
Any problems you have with viewers or plugins can be discussed here. Remember though that this is NOT the place for official feature requests. If you have a wonderful idea, please post if in the Feature Ideas forum.